Merge pull request #95 from siikamiika/feature-merge-similar-results

Feature: result grouping by main dictionary sequence (along with some other changes)

10 files changed, 778 insertions, 120 deletions

diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
index 9f65bb07..de3ad64e 100644
--- a/ext/bg/js/api.js
+++ b/ext/bg/js/api.js
@@ -29,9 +29,11 @@ async function apiTermsFind(text) {
     const options = utilBackend().options;
     const translator = utilBackend().translator;
 
-    const searcher = options.general.groupResults ?
-        translator.findTermsGrouped.bind(translator) :
-        translator.findTermsSplit.bind(translator);
+    const searcher = {
+        'merge': translator.findTermsMerged,
+        'split': translator.findTermsSplit,
+        'group': translator.findTermsGrouped
+    }[options.general.resultOutputMode].bind(translator);
 
     const {definitions, length} = await searcher(
         text,
diff --git a/ext/bg/js/audio.js b/ext/bg/js/audio.js
index ce47490c..549288f5 100644
--- a/ext/bg/js/audio.js
+++ b/ext/bg/js/audio.js
@@ -140,8 +140,13 @@ async function audioInject(definition, fields, mode) {
     }
 
     try {
-        const url = await audioBuildUrl(definition, mode);
-        const filename = audioBuildFilename(definition);
+        let audioSourceDefinition = definition;
+        if (definition.hasOwnProperty('expressions')) {
+            audioSourceDefinition = definition.expressions[0];
+        }
+
+        const url = await audioBuildUrl(audioSourceDefinition, mode);
+        const filename = audioBuildFilename(audioSourceDefinition);
 
         if (url && filename) {
             definition.audio = {url, filename};
diff --git a/ext/bg/js/database.js b/ext/bg/js/database.js
index 6ceb3ec8..fcf8ef3f 100644
--- a/ext/bg/js/database.js
+++ b/ext/bg/js/database.js
@@ -40,6 +40,9 @@ class Database {
             kanjiMeta: '++,dictionary,character',
             tagMeta:   '++,dictionary,name'
         });
+        this.db.version(4).stores({
+            terms: '++id,dictionary,expression,reading,sequence'
+        });
 
         await this.db.open();
     }
@@ -68,12 +71,66 @@ class Database {
                 results.push({
                     expression: row.expression,
                     reading: row.reading,
-                    tags: dictFieldSplit(row.tags),
+                    definitionTags: dictFieldSplit(row.definitionTags || row.tags || ''),
+                    termTags: dictFieldSplit(row.termTags || ''),
+                    rules: dictFieldSplit(row.rules),
+                    glossary: row.glossary,
+                    score: row.score,
+                    dictionary: row.dictionary,
+                    id: row.id,
+                    sequence: typeof row.sequence === 'undefined' ? -1 : row.sequence
+                });
+            }
+        });
+
+        return results;
+    }
+
+    async findTermsExact(term, reading, titles) {
+        if (!this.db) {
+            throw 'Database not initialized';
+        }
+
+        const results = [];
+        await this.db.terms.where('expression').equals(term).each(row => {
+            if (row.reading === reading && titles.includes(row.dictionary)) {
+                results.push({
+                    expression: row.expression,
+                    reading: row.reading,
+                    definitionTags: dictFieldSplit(row.definitionTags || row.tags || ''),
+                    termTags: dictFieldSplit(row.termTags || ''),
+                    rules: dictFieldSplit(row.rules),
+                    glossary: row.glossary,
+                    score: row.score,
+                    dictionary: row.dictionary,
+                    id: row.id,
+                    sequence: typeof row.sequence === 'undefined' ? -1 : row.sequence
+                });
+            }
+        });
+
+        return results;
+    }
+
+    async findTermsBySequence(sequence, mainDictionary) {
+        if (!this.db) {
+            throw 'Database not initialized';
+        }
+
+        const results = [];
+        await this.db.terms.where('sequence').equals(sequence).each(row => {
+            if (row.dictionary === mainDictionary) {
+                results.push({
+                    expression: row.expression,
+                    reading: row.reading,
+                    definitionTags: dictFieldSplit(row.definitionTags || row.tags || ''),
+                    termTags: dictFieldSplit(row.termTags || ''),
                     rules: dictFieldSplit(row.rules),
                     glossary: row.glossary,
                     score: row.score,
                     dictionary: row.dictionary,
-                    id: row.id
+                    id: row.id,
+                    sequence: typeof row.sequence === 'undefined' ? -1 : row.sequence
                 });
             }
         });
@@ -171,12 +228,27 @@ class Database {
         }
     }
 
+    async getTitlesWithSequences() {
+        if (!this.db) {
+            throw 'Database not initialized';
+        }
+
+        const titles = [];
+        await this.db.dictionaries.each(row => {
+            if (row.hasSequences) {
+                titles.push(row.title);
+            }
+        });
+
+        return titles;
+    }
+
     async importDictionary(archive, callback) {
         if (!this.db) {
             throw 'Database not initialized';
         }
 
-        const indexDataLoaded = async summary => {
+        const indexDataValid = async summary => {
             if (summary.version > 2) {
                 throw 'Unsupported dictionary version';
             }
@@ -185,7 +257,9 @@ class Database {
             if (count > 0) {
                 throw 'Dictionary is already imported';
             }
+        };
 
+        const indexDataLoaded = async summary => {
             await this.db.dictionaries.add(summary);
         };
 
@@ -196,11 +270,11 @@ class Database {
 
             const rows = [];
             if (summary.version === 1) {
-                for (const [expression, reading, tags, rules, score, ...glossary] of entries) {
+                for (const [expression, reading, definitionTags, rules, score, ...glossary] of entries) {
                     rows.push({
                         expression,
                         reading,
-                        tags,
+                        definitionTags,
                         rules,
                         score,
                         glossary,
@@ -208,19 +282,23 @@ class Database {
                     });
                 }
             } else {
-                for (const [expression, reading, tags, rules, score, glossary] of entries) {
+                for (const [expression, reading, definitionTags, rules, score, glossary, sequence, termTags] of entries) {
                     rows.push({
                         expression,
                         reading,
-                        tags,
+                        definitionTags,
                         rules,
                         score,
                         glossary,
+                        sequence,
+                        termTags,
                         dictionary: summary.title
                     });
                 }
             }
 
+            summary.hasSequences = rows.every(row => row.sequence >= 0);
+
             await this.db.terms.bulkAdd(rows);
         };
 
@@ -300,12 +378,13 @@ class Database {
             }
 
             const rows = [];
-            for (const [name, category, order, notes] of entries) {
+            for (const [name, category, order, notes, score] of entries) {
                 const row = dictTagSanitize({
                     name,
                     category,
                     order,
                     notes,
+                    score,
                     dictionary: summary.title
                 });
 
@@ -317,6 +396,7 @@ class Database {
 
         return await Database.importDictionaryZip(
             archive,
+            indexDataValid,
             indexDataLoaded,
             termDataLoaded,
             termMetaDataLoaded,
@@ -328,6 +408,7 @@ class Database {
 
     static async importDictionaryZip(
         archive,
+        indexDataValid,
         indexDataLoaded,
         termDataLoaded,
         termMetaDataLoaded,
@@ -353,9 +434,7 @@ class Database {
             version: index.format || index.version
         };
 
-        if (indexDataLoaded) {
-            await indexDataLoaded(summary);
-        }
+        await indexDataValid(summary);
 
         const buildTermBankName      = index => `term_bank_${index + 1}.json`;
         const buildTermMetaBankName  = index => `term_meta_bank_${index + 1}.json`;
@@ -390,7 +469,7 @@ class Database {
             const bank = [];
             for (const name in index.tagMeta) {
                 const tag = index.tagMeta[name];
-                bank.push([name, tag.category, tag.order, tag.notes]);
+                bank.push([name, tag.category, tag.order, tag.notes, tag.score]);
             }
 
             tagDataLoaded(summary, bank, ++bankTotalCount, bankLoadedCount++);
@@ -412,6 +491,10 @@ class Database {
         await loadBank(summary, buildKanjiMetaBankName, kanjiMetaBankCount, kanjiMetaDataLoaded);
         await loadBank(summary, buildTagBankName, tagBankCount, tagDataLoaded);
 
+        if (indexDataLoaded) {
+            await indexDataLoaded(summary);
+        }
+
         return summary;
     }
 }
diff --git a/ext/bg/js/dictionary.js b/ext/bg/js/dictionary.js
index 57acbe5e..fea5f3e5 100644
--- a/ext/bg/js/dictionary.js
+++ b/ext/bg/js/dictionary.js
@@ -89,7 +89,7 @@ function dictTermsSort(definitions, dictionaries=null) {
             return 1;
         }
 
-        return v2.expression.localeCompare(v1.expression);
+        return v2.expression.toString().localeCompare(v1.expression.toString());
     });
 }
 
@@ -110,6 +110,33 @@ function dictTermsUndupe(definitions) {
     return definitionsUnique;
 }
 
+function dictTermsCompressTags(definitions) {
+    let lastDictionary = '';
+    let lastPartOfSpeech = '';
+
+    for (const definition of definitions) {
+        const dictionary = JSON.stringify(definition.definitionTags.filter(tag => tag.category === 'dictionary').map(tag => tag.name).sort());
+        const partOfSpeech = JSON.stringify(definition.definitionTags.filter(tag => tag.category === 'partOfSpeech').map(tag => tag.name).sort());
+
+        const filterOutCategories = [];
+
+        if (lastDictionary === dictionary) {
+            filterOutCategories.push('dictionary');
+        } else {
+            lastDictionary = dictionary;
+            lastPartOfSpeech = '';
+        }
+
+        if (lastPartOfSpeech === partOfSpeech) {
+            filterOutCategories.push('partOfSpeech');
+        } else {
+            lastPartOfSpeech = partOfSpeech;
+        }
+
+        definition.definitionTags = definition.definitionTags.filter(tag => !filterOutCategories.includes(tag.category));
+    }
+}
+
 function dictTermsGroup(definitions, dictionaries) {
     const groups = {};
     for (const definition of definitions) {
@@ -136,6 +163,7 @@ function dictTermsGroup(definitions, dictionaries) {
             expression: firstDef.expression,
             reading: firstDef.reading,
             reasons: firstDef.reasons,
+            termTags: groupDefs[0].termTags,
             score: groupDefs.reduce((p, v) => v.score > p ? v.score : p, Number.MIN_SAFE_INTEGER),
             source: firstDef.source
         });
@@ -144,6 +172,116 @@ function dictTermsGroup(definitions, dictionaries) {
     return dictTermsSort(results);
 }
 
+function dictTermsMergeBySequence(definitions, mainDictionary) {
+    const definitionsBySequence = {'-1': []};
+    for (const definition of definitions) {
+        if (mainDictionary === definition.dictionary && definition.sequence >= 0) {
+            if (!definitionsBySequence[definition.sequence]) {
+                definitionsBySequence[definition.sequence] = {
+                    reasons: definition.reasons,
+                    score: Number.MIN_SAFE_INTEGER,
+                    expression: new Set(),
+                    reading: new Set(),
+                    expressions: new Map(),
+                    source: definition.source,
+                    dictionary: definition.dictionary,
+                    definitions: []
+                };
+            }
+            const score = Math.max(definitionsBySequence[definition.sequence].score, definition.score);
+            definitionsBySequence[definition.sequence].score = score;
+        } else {
+            definitionsBySequence['-1'].push(definition);
+        }
+    }
+
+    return definitionsBySequence;
+}
+
+function dictTermsMergeByGloss(result, definitions, appendTo, mergedIndices) {
+    const definitionsByGloss = appendTo || {};
+    for (const [index, definition] of definitions.entries()) {
+        if (appendTo) {
+            let match = false;
+            for (const expression of result.expressions.keys()) {
+                if (definition.expression === expression) {
+                    for (const reading of result.expressions.get(expression).keys()) {
+                        if (definition.reading === reading) {
+                            match = true;
+                            break;
+                        }
+                    }
+                }
+                if (match) {
+                    break;
+                }
+            }
+
+            if (!match) {
+                continue;
+            } else if (mergedIndices) {
+                mergedIndices.add(index);
+            }
+        }
+
+        const gloss = JSON.stringify(definition.glossary.concat(definition.dictionary));
+        if (!definitionsByGloss[gloss]) {
+            definitionsByGloss[gloss] = {
+                expression: new Set(),
+                reading: new Set(),
+                definitionTags: [],
+                glossary: definition.glossary,
+                source: result.source,
+                reasons: [],
+                score: definition.score,
+                id: definition.id,
+                dictionary: definition.dictionary
+            };
+        }
+
+        definitionsByGloss[gloss].expression.add(definition.expression);
+        definitionsByGloss[gloss].reading.add(definition.reading);
+
+        result.expression.add(definition.expression);
+        result.reading.add(definition.reading);
+
+        // result->expressions[ Expression1[ Reading1[ Tag1, Tag2 ] ], Expression2, ... ]
+        if (!result.expressions.has(definition.expression)) {
+            result.expressions.set(definition.expression, new Map());
+        }
+        if (!result.expressions.get(definition.expression).has(definition.reading)) {
+            result.expressions.get(definition.expression).set(definition.reading, new Set());
+        }
+
+        for (const tag of definition.definitionTags) {
+            if (!definitionsByGloss[gloss].definitionTags.find(existingTag => existingTag.name === tag.name)) {
+                definitionsByGloss[gloss].definitionTags.push(tag);
+            }
+        }
+
+        for (const tag of definition.termTags) {
+            result.expressions.get(definition.expression).get(definition.reading).add(tag);
+        }
+    }
+
+    for (const gloss in definitionsByGloss) {
+        const definition = definitionsByGloss[gloss];
+        definition.only = [];
+        if (!utilSetEqual(definition.expression, result.expression)) {
+            for (const expression of utilSetIntersection(definition.expression, result.expression)) {
+                definition.only.push(expression);
+            }
+        }
+        if (!utilSetEqual(definition.reading, result.reading)) {
+            for (const reading of utilSetIntersection(definition.reading, result.reading)) {
+                definition.only.push(reading);
+            }
+        }
+    }
+
+    return definitionsByGloss;
+}
+
 function dictTagBuildSource(name) {
     return dictTagSanitize({name, category: 'dictionary', order: 100});
 }
@@ -153,6 +291,7 @@ function dictTagSanitize(tag) {
     tag.category = tag.category || 'default';
     tag.notes = tag.notes || '';
     tag.order = tag.order || 0;
+    tag.score = tag.score || 0;
     return tag;
 }
 
@@ -207,10 +346,12 @@ async function dictFieldFormat(field, definition, mode, options) {
         const data = {
             marker,
             definition,
-            group: options.general.groupResults,
+            group: options.general.resultOutputMode === 'group',
+            merge: options.general.resultOutputMode === 'merge',
             modeTermKanji: mode === 'term-kanji',
             modeTermKana: mode === 'term-kana',
-            modeKanji: mode === 'kanji'
+            modeKanji: mode === 'kanji',
+            compactGlossaries: options.general.compactGlossaries
         };
 
         const html = await apiTemplateRender(options.anki.fieldTemplates, data, true);
diff --git a/ext/bg/js/options.js b/ext/bg/js/options.js
index 36ab7694..9f1414ad 100644
--- a/ext/bg/js/options.js
+++ b/ext/bg/js/options.js
@@ -19,12 +19,26 @@
 
 function optionsFieldTemplates() {
     return `
+<style>
+.expression-popular {
+    color: #0275d8;
+}
+
+.expression-rare {
+    color: #999;
+}
+</style>
 {{#*inline "glossary-single"}}
     {{~#unless brief~}}
-        {{~#if tags~}}<i>({{#each tags}}{{name}}{{#unless @last}}, {{/unless}}{{/each}})</i> {{/if~}}
+        {{~#if definitionTags~}}<i>({{#each definitionTags}}{{name}}{{#unless @last}}, {{/unless}}{{/each}})</i> {{/if~}}
+        {{~#if only~}}({{#each only}}{{{.}}}{{#unless @last}}, {{/unless}}{{/each}} only) {{/if~}}
     {{~/unless~}}
     {{~#if glossary.[1]~}}
-        <ul>{{#each glossary}}<li>{{#multiLine}}{{.}}{{/multiLine}}</li>{{/each}}</ul>
+        {{~#if compactGlossaries~}}
+            {{#each glossary}}{{#multiLine}}{{.}}{{/multiLine}}{{#unless @last}} | {{/unless}}{{/each}}
+        {{~else~}}
+            <ul>{{#each glossary}}<li>{{#multiLine}}{{.}}{{/multiLine}}</li>{{/each}}</ul>
+        {{~/if~}}
     {{~else~}}
         {{~#multiLine}}{{glossary.[0]}}{{/multiLine~}}
     {{~/if~}}
@@ -41,23 +55,56 @@ function optionsFieldTemplates() {
 {{/inline}}
 
 {{#*inline "expression"}}
-    {{~#if modeTermKana~}}
-        {{~#if definition.reading~}}
-            {{definition.reading}}
+    {{~#if merge~}}
+        {{~#if modeTermKana~}}
+            {{~#each definition.reading~}}
+                {{{.}}}
+                {{~#unless @last}}、{{/unless~}}
+            {{~else~}}
+                {{~#each definition.expression~}}
+                    {{{.}}}
+                    {{~#unless @last}}、{{/unless~}}
+                {{~/each~}}
+            {{~/each~}}
         {{~else~}}
-            {{definition.expression}}
+            {{~#each definition.expression~}}
+                {{{.}}}
+                {{~#unless @last}}、{{/unless~}}
+            {{~/each~}}
         {{~/if~}}
     {{~else~}}
-        {{definition.expression}}
+        {{~#if modeTermKana~}}
+            {{~#if definition.reading~}}
+                {{definition.reading}}
+            {{~else~}}
+                {{definition.expression}}
+            {{~/if~}}
+        {{~else~}}
+            {{definition.expression}}
+        {{~/if~}}
     {{~/if~}}
 {{/inline}}
 
 {{#*inline "furigana"}}
-    {{#furigana}}{{{definition}}}{{/furigana}}
+    {{~#if merge~}}
+        {{~#each definition.expressions~}}
+            <span class="expression-{{termFrequency}}">{{~#furigana}}{{{.}}}{{/furigana~}}</span>
+            {{~#unless @last}}、{{/unless~}}
+        {{~/each~}}
+    {{~else~}}
+        {{#furigana}}{{{definition}}}{{/furigana}}
+    {{~/if~}}
 {{/inline}}
 
 {{#*inline "furigana-plain"}}
-    {{#furiganaPlain}}{{{definition}}}{{/furiganaPlain}}
+    {{~#if merge~}}
+        {{~#each definition.expressions~}}
+            <span class="expression-{{termFrequency}}">{{~#furiganaPlain}}{{{.}}}{{/furiganaPlain~}}</span>
+            {{~#unless @last}}、{{/unless~}}
+        {{~/each~}}
+    {{~else~}}
+        {{#furiganaPlain}}{{{definition}}}{{/furiganaPlain}}
+    {{~/if~}}
 {{/inline}}
 
 {{#*inline "glossary"}}
@@ -71,12 +118,18 @@ function optionsFieldTemplates() {
     {{~else~}}
         {{~#if group~}}
             {{~#if definition.definitions.[1]~}}
-                <ol>{{#each definition.definitions}}<li>{{> glossary-single brief=../brief}}</li>{{/each}}</ol>
+                <ol>{{#each definition.definitions}}<li>{{> glossary-single brief=../brief compactGlossaries=../compactGlossaries}}</li>{{/each}}</ol>
+            {{~else~}}
+                {{~> glossary-single definition.definitions.[0] brief=brief compactGlossaries=compactGlossaries~}}
+            {{~/if~}}
+        {{~else if merge~}}
+            {{~#if definition.definitions.[1]~}}
+                <ol>{{#each definition.definitions}}<li>{{> glossary-single brief=../brief compactGlossaries=../compactGlossaries}}</li>{{/each}}</ol>
             {{~else~}}
-                {{~> glossary-single definition.definitions.[0] brief=brief~}}
+                {{~> glossary-single definition.definitions.[0] brief=brief compactGlossaries=compactGlossaries~}}
             {{~/if~}}
         {{~else~}}
-            {{~> glossary-single definition brief=brief~}}
+            {{~> glossary-single definition brief=brief compactGlossaries=compactGlossaries~}}
         {{~/if~}}
     {{~/if~}}
     </div>
@@ -95,7 +148,16 @@ function optionsFieldTemplates() {
 {{/inline}}
 
 {{#*inline "reading"}}
-    {{~#unless modeTermKana}}{{definition.reading}}{{/unless~}}
+    {{~#unless modeTermKana~}}
+        {{~#if merge~}}
+            {{~#each definition.reading~}}
+                {{{.}}}
+                {{~#unless @last}}、{{/unless~}}
+            {{~/each~}}
+        {{~else~}}
+            {{~definition.reading~}}
+        {{~/if~}}
+    {{~/unless~}}
 {{/inline}}
 
 {{#*inline "sentence"}}
@@ -115,7 +177,7 @@ function optionsFieldTemplates() {
 {{/inline}}
 
 {{#*inline "tags"}}
-    {{~#each definition.tags}}{{name}}{{#unless @last}}, {{/unless}}{{/each~}}
+    {{~#each definition.definitionTags}}{{name}}{{#unless @last}}, {{/unless}}{{/each~}}
 {{/inline}}
 
 {{#*inline "url"}}
@@ -132,14 +194,17 @@ function optionsSetDefaults(options) {
             enable: true,
             audioSource: 'jpod101',
             audioVolume: 100,
-            groupResults: true,
+            resultOutputMode: 'group',
             debugInfo: false,
             maxResults: 32,
             showAdvanced: false,
             popupWidth: 400,
             popupHeight: 250,
             popupOffset: 10,
-            showGuide: true
+            showGuide: true,
+            compactTags: false,
+            compactGlossaries: false,
+            mainDictionary: ''
         },
 
         scanning: {
@@ -205,6 +270,24 @@ function optionsVersion(options) {
             } else {
                 options.scanning.modifier = 'none';
             }
+        },
+        () => {
+            if (options.general.groupResults) {
+                options.general.resultOutputMode = 'group';
+            } else {
+                options.general.resultOutputMode = 'split';
+            }
+            if (utilStringHashCode(options.anki.fieldTemplates) !== -805327496) { // a3c8508031a1073629803d0616a2ee416cd3cccc
+                options.anki.fieldTemplates = `
+{{#if merge}}
+${optionsFieldTemplates()}
+{{else}}
+${options.anki.fieldTemplates}
+{{/if}}
+`.trim();
+            } else {
+                options.anki.fieldTemplates = optionsFieldTemplates();
+            }
         }
     ];
 
diff --git a/ext/bg/js/settings.js b/ext/bg/js/settings.js
index a2f22371..7a9ba4f9 100644
--- a/ext/bg/js/settings.js
+++ b/ext/bg/js/settings.js
@@ -22,9 +22,12 @@ async function formRead() {
     const optionsNew = $.extend(true, {}, optionsOld);
 
     optionsNew.general.showGuide = $('#show-usage-guide').prop('checked');
+    optionsNew.general.compactTags = $('#compact-tags').prop('checked');
+    optionsNew.general.compactGlossaries = $('#compact-glossaries').prop('checked');
+    optionsNew.general.resultOutputMode = $('#result-output-mode').val();
+    optionsNew.general.mainDictionary = $('#main-dictionary').val();
     optionsNew.general.audioSource = $('#audio-playback-source').val();
     optionsNew.general.audioVolume = parseFloat($('#audio-playback-volume').val());
-    optionsNew.general.groupResults = $('#group-terms-results').prop('checked');
     optionsNew.general.debugInfo = $('#show-debug-info').prop('checked');
     optionsNew.general.showAdvanced = $('#show-advanced-options').prop('checked');
     optionsNew.general.maxResults = parseInt($('#max-displayed-results').val(), 10);
@@ -60,7 +63,8 @@ async function formRead() {
         const title = dictionary.data('title');
         const priority = parseInt(dictionary.find('.dict-priority').val(), 10);
         const enabled = dictionary.find('.dict-enabled').prop('checked');
-        optionsNew.dictionaries[title] = {priority, enabled};
+        const allowSecondarySearches = dictionary.find('.dict-allow-secondary-searches').prop('checked');
+        optionsNew.dictionaries[title] = {priority, enabled, allowSecondarySearches};
     });
 
     return {optionsNew, optionsOld};
@@ -81,6 +85,13 @@ function formUpdateVisibility(options) {
         advanced.hide();
     }
 
+    const merge = $('.options-merge');
+    if (options.general.resultOutputMode === 'merge') {
+        merge.show();
+    } else {
+        merge.hide();
+    }
+
     const debug = $('#debug');
     if (options.general.debugInfo) {
         const temp = utilIsolate(options);
@@ -93,6 +104,29 @@ function formUpdateVisibility(options) {
     }
 }
 
+async function formMainDictionaryOptionsPopulate(options) {
+    const select = $('#main-dictionary').empty();
+
+    let titles = await utilDatabaseGetTitlesWithSequences();
+    titles = titles.filter(title => options.dictionaries[title].enabled);
+    const formOptionsHtml = [];
+    let mainDictionarySelected = false;
+    for (const title of titles) {
+        if (options.general.mainDictionary === title) {
+            mainDictionarySelected = true;
+        }
+        formOptionsHtml.push(`<option value="${title}"${options.general.mainDictionary === title ? ' selected' : ''}>${title}</option>`);
+    }
+
+    if (!mainDictionarySelected) {
+        options.general.mainDictionary = '';
+    }
+
+    const notSelectedOptionHtml = `<option class="text-muted" value=""${!mainDictionarySelected ? ' selected' : ''}>Not selected</option>`;
+
+    select.append($([notSelectedOptionHtml].concat(formOptionsHtml).join('')));
+}
+
 async function onFormOptionsChanged(e) {
     try {
         if (!e.originalEvent && !e.isTrigger) {
@@ -100,6 +134,7 @@ async function onFormOptionsChanged(e) {
         }
 
         const {optionsNew, optionsOld} = await formRead();
+        await formMainDictionaryOptionsPopulate(optionsNew);
         await optionsSave(optionsNew);
 
         formUpdateVisibility(optionsNew);
@@ -124,9 +159,12 @@ async function onReady() {
     const options = await optionsLoad();
 
     $('#show-usage-guide').prop('checked', options.general.showGuide);
+    $('#compact-tags').prop('checked', options.general.compactTags);
+    $('#compact-glossaries').prop('checked', options.general.compactGlossaries);
+    $('#result-output-mode').val(options.general.resultOutputMode);
+    $('#main-dictionary').val(options.general.mainDictionary);
     $('#audio-playback-source').val(options.general.audioSource);
     $('#audio-playback-volume').val(options.general.audioVolume);
-    $('#group-terms-results').prop('checked', options.general.groupResults);
     $('#show-debug-info').prop('checked', options.general.debugInfo);
     $('#show-advanced-options').prop('checked', options.general.showAdvanced);
     $('#max-displayed-results').val(options.general.maxResults);
@@ -166,6 +204,8 @@ async function onReady() {
         ankiErrorShow(e);
     }
 
+    await formMainDictionaryOptionsPopulate(options);
+
     formUpdateVisibility(options);
 }
 
@@ -247,13 +287,14 @@ async function dictionaryGroupsPopulate(options) {
     }
 
     for (const dictRow of dictRowsSort(dictRows, options)) {
-        const dictOptions = options.dictionaries[dictRow.title] || {enabled: false, priority: 0};
+        const dictOptions = options.dictionaries[dictRow.title] || {enabled: false, priority: 0, allowSecondarySearches: false};
         const dictHtml = await apiTemplateRender('dictionary.html', {
             title: dictRow.title,
             version: dictRow.version,
             revision: dictRow.revision,
             priority: dictOptions.priority,
-            enabled: dictOptions.enabled
+            enabled: dictOptions.enabled,
+            allowSecondarySearches: dictOptions.allowSecondarySearches
         });
 
         dictGroups.append($(dictHtml));
@@ -261,7 +302,7 @@ async function dictionaryGroupsPopulate(options) {
 
     formUpdateVisibility(options);
 
-    $('.dict-enabled, .dict-priority').change(e => {
+    $('.dict-enabled, .dict-priority, .dict-allow-secondary-searches').change(e => {
         dictionaryGroupsSort();
         onFormOptionsChanged(e);
     });
@@ -280,9 +321,11 @@ async function onDictionaryPurge(e) {
         await utilDatabasePurge();
         const options = await optionsLoad();
         options.dictionaries = {};
+        options.general.mainDictionary = '';
         await optionsSave(options);
 
         await dictionaryGroupsPopulate(options);
+        await formMainDictionaryOptionsPopulate(options);
     } catch (e) {
         dictionaryErrorShow(e);
     } finally {
@@ -308,10 +351,14 @@ async function onDictionaryImport(e) {
 
         const options = await optionsLoad();
         const summary = await utilDatabaseImport(e.target.files[0], updateProgress);
-        options.dictionaries[summary.title] = {enabled: true, priority: 0};
+        options.dictionaries[summary.title] = {enabled: true, priority: 0, allowSecondarySearches: false};
+        if (summary.hasSequences && !options.general.mainDictionary) {
+            options.general.mainDictionary = summary.title;
+        }
         await optionsSave(options);
 
         await dictionaryGroupsPopulate(options);
+        await formMainDictionaryOptionsPopulate(options);
     } catch (e) {
         dictionaryErrorShow(e);
     } finally {
diff --git a/ext/bg/js/templates.js b/ext/bg/js/templates.js
index b5d352fc..f3f680d5 100644
--- a/ext/bg/js/templates.js
+++ b/ext/bg/js/templates.js
@@ -13,7 +13,9 @@ templates['dictionary.html'] = template({"1":function(container,depth0,helpers,p
     + alias4(((helper = (helper = helpers.revision || (depth0 != null ? depth0.revision : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"revision","hash":{},"data":data}) : helper)))
     + "</small></h4>\n\n    <div class=\"checkbox\">\n        <label><input type=\"checkbox\" class=\"dict-enabled\" "
     + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.enabled : depth0),{"name":"if","hash":{},"fn":container.program(1, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + "> Enable search</label>\n    </div>\n    <div class=\"form-group options-advanced\">\n        <label for=\"dict-"
+    + "> Enable search</label>\n    </div>\n    <div class=\"checkbox options-advanced\">\n        <label><input type=\"checkbox\" class=\"dict-allow-secondary-searches\" "
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.allowSecondarySearches : depth0),{"name":"if","hash":{},"fn":container.program(1, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "> Allow secondary searches</label>\n    </div>\n    <div class=\"form-group options-advanced\">\n        <label for=\"dict-"
     + alias4(((helper = (helper = helpers.title || (depth0 != null ? depth0.title : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"title","hash":{},"data":data}) : helper)))
     + "\">Result priority</label>\n        <input type=\"number\" value=\""
     + alias4(((helper = (helper = helpers.priority || (depth0 != null ? depth0.priority : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"priority","hash":{},"data":data}) : helper)))
@@ -204,15 +206,20 @@ templates['model.html'] = template({"1":function(container,depth0,helpers,partia
 templates['terms.html'] = template({"1":function(container,depth0,helpers,partials,data) {
     var stack1, alias1=depth0 != null ? depth0 : (container.nullContext || {});
 
-  return ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.tags : depth0),{"name":"if","hash":{},"fn":container.program(2, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + ((stack1 = helpers["if"].call(alias1,((stack1 = (depth0 != null ? depth0.glossary : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(5, data, 0),"inverse":container.program(9, data, 0),"data":data})) != null ? stack1 : "");
+  return ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.definitionTags : depth0),{"name":"if","hash":{},"fn":container.program(2, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.only : depth0),{"name":"if","hash":{},"fn":container.program(7, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,((stack1 = (depth0 != null ? depth0.glossary : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(11, data, 0),"inverse":container.program(17, data, 0),"data":data})) != null ? stack1 : "");
 },"2":function(container,depth0,helpers,partials,data) {
-    var stack1;
+    var stack1, alias1=depth0 != null ? depth0 : (container.nullContext || {});
 
-  return "<div>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.tags : depth0),{"name":"each","hash":{},"fn":container.program(3, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+  return "<div "
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.compactGlossaries : depth0),{"name":"if","hash":{},"fn":container.program(3, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ">\n"
+    + ((stack1 = helpers.each.call(alias1,(depth0 != null ? depth0.definitionTags : depth0),{"name":"each","hash":{},"fn":container.program(5, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>\n";
 },"3":function(container,depth0,helpers,partials,data) {
+    return "class=\"compact-info\"";
+},"5":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "    <span class=\"label label-default tag-"
@@ -222,88 +229,192 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + "\">"
     + alias4(((helper = (helper = helpers.name || (depth0 != null ? depth0.name : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"5":function(container,depth0,helpers,partials,data) {
+},"7":function(container,depth0,helpers,partials,data) {
+    var stack1, alias1=depth0 != null ? depth0 : (container.nullContext || {});
+
+  return "<div "
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.compactGlossaries : depth0),{"name":"if","hash":{},"fn":container.program(3, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ">\n    ("
+    + ((stack1 = helpers.each.call(alias1,(depth0 != null ? depth0.only : depth0),{"name":"each","hash":{},"fn":container.program(8, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "    only)\n</div>\n";
+},"8":function(container,depth0,helpers,partials,data) {
     var stack1;
 
-  return "<ul>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.glossary : depth0),{"name":"each","hash":{},"fn":container.program(6, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+  return ((stack1 = container.lambda(depth0, depth0)) != null ? stack1 : "")
+    + ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.last),{"name":"unless","hash":{},"fn":container.program(9, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "\n";
+},"9":function(container,depth0,helpers,partials,data) {
+    return ", ";
+},"11":function(container,depth0,helpers,partials,data) {
+    var stack1, alias1=depth0 != null ? depth0 : (container.nullContext || {});
+
+  return "<ul "
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.compactGlossaries : depth0),{"name":"if","hash":{},"fn":container.program(12, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ">\n"
+    + ((stack1 = helpers.each.call(alias1,(depth0 != null ? depth0.glossary : depth0),{"name":"each","hash":{},"fn":container.program(14, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</ul>\n";
-},"6":function(container,depth0,helpers,partials,data) {
+},"12":function(container,depth0,helpers,partials,data) {
+    return "class=\"compact-glossary\"";
+},"14":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options, buffer = 
   "    <li><span class=\"glossary-item\">";
-  stack1 = ((helper = (helper = helpers.multiLine || (depth0 != null ? depth0.multiLine : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"multiLine","hash":{},"fn":container.program(7, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+  stack1 = ((helper = (helper = helpers.multiLine || (depth0 != null ? depth0.multiLine : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"multiLine","hash":{},"fn":container.program(15, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
   if (!helpers.multiLine) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</span></li>\n";
-},"7":function(container,depth0,helpers,partials,data) {
+},"15":function(container,depth0,helpers,partials,data) {
     return container.escapeExpression(container.lambda(depth0, depth0));
-},"9":function(container,depth0,helpers,partials,data) {
-    var stack1, helper, options, buffer = 
-  "<div class=\"glossary-item\">";
-  stack1 = ((helper = (helper = helpers.multiLine || (depth0 != null ? depth0.multiLine : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"multiLine","hash":{},"fn":container.program(10, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+},"17":function(container,depth0,helpers,partials,data) {
+    var stack1, helper, options, alias1=depth0 != null ? depth0 : (container.nullContext || {}), buffer = 
+  "<div class=\"glossary-item "
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.compactGlossaries : depth0),{"name":"if","hash":{},"fn":container.program(18, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "\">";
+  stack1 = ((helper = (helper = helpers.multiLine || (depth0 != null ? depth0.multiLine : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"multiLine","hash":{},"fn":container.program(20, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(alias1,options) : helper));
   if (!helpers.multiLine) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</div>\n";
-},"10":function(container,depth0,helpers,partials,data) {
+},"18":function(container,depth0,helpers,partials,data) {
+    return "compact-glossary";
+},"20":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return container.escapeExpression(container.lambda(((stack1 = (depth0 != null ? depth0.glossary : depth0)) != null ? stack1["0"] : stack1), depth0));
-},"12":function(container,depth0,helpers,partials,data) {
-    var stack1, helper, options, alias1=depth0 != null ? depth0 : (container.nullContext || {}), buffer = 
-  "<div class=\"entry\" data-type=\"term\">\n    <div class=\"actions\">\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.addable : depth0),{"name":"if","hash":{},"fn":container.program(13, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.playback : depth0),{"name":"if","hash":{},"fn":container.program(15, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
-    + "        <img src=\"/mixed/img/entry-current.png\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n    <div class=\"expression\">";
-  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"kanjiLinks","hash":{},"fn":container.program(17, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(alias1,options) : helper));
-  if (!helpers.kanjiLinks) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
-  if (stack1 != null) { buffer += stack1; }
-  return buffer + "</div>\n\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.reasons : depth0),{"name":"if","hash":{},"fn":container.program(20, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+},"22":function(container,depth0,helpers,partials,data,blockParams,depths) {
+    var stack1, alias1=depth0 != null ? depth0 : (container.nullContext || {});
+
+  return "<div class=\"entry\" data-type=\"term\">\n    <div class=\"actions\">\n"
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.addable : depth0),{"name":"if","hash":{},"fn":container.program(23, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.unless.call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"unless","hash":{},"fn":container.program(25, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "        <img src=\"/mixed/img/entry-current.png\" class=\"current\" title=\"Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)\" alt>\n    </div>\n\n"
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(28, data, 0, blockParams, depths),"inverse":container.program(43, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
+    + "\n"
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.reasons : depth0),{"name":"if","hash":{},"fn":container.program(47, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(24, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(51, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n    <div class=\"glossary\">\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.grouped : depth0),{"name":"if","hash":{},"fn":container.program(27, data, 0),"inverse":container.program(33, data, 0),"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.grouped : depth0),{"name":"if","hash":{},"fn":container.program(54, data, 0, blockParams, depths),"inverse":container.program(60, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "")
     + "    </div>\n\n"
-    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(35, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.debug : depth0),{"name":"if","hash":{},"fn":container.program(63, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "</div>\n";
-},"13":function(container,depth0,helpers,partials,data) {
+},"23":function(container,depth0,helpers,partials,data) {
     return "        <a href=\"#\" class=\"action-view-note pending disabled\"><img src=\"/mixed/img/view-note.png\" title=\"View added note (Alt + V)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kanji\"><img src=\"/mixed/img/add-term-kanji.png\" title=\"Add expression (Alt + E)\" alt></a>\n        <a href=\"#\" class=\"action-add-note pending disabled\" data-mode=\"term-kana\"><img src=\"/mixed/img/add-term-kana.png\" title=\"Add reading (Alt + R)\" alt></a>\n";
-},"15":function(container,depth0,helpers,partials,data) {
+},"25":function(container,depth0,helpers,partials,data) {
+    var stack1;
+
+  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.playback : depth0),{"name":"if","hash":{},"fn":container.program(26, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"26":function(container,depth0,helpers,partials,data) {
     return "        <a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.png\" title=\"Play audio (Alt + P)\" alt></a>\n";
-},"17":function(container,depth0,helpers,partials,data) {
+},"28":function(container,depth0,helpers,partials,data,blockParams,depths) {
+    var stack1;
+
+  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.expressions : depth0),{"name":"each","hash":{},"fn":container.program(29, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"29":function(container,depth0,helpers,partials,data,blockParams,depths) {
+    var stack1, helper, options, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", buffer = 
+  "<div class=\"expression\"><!--\n     --><span class=\"expression-"
+    + container.escapeExpression(((helper = (helper = helpers.termFrequency || (depth0 != null ? depth0.termFrequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"termFrequency","hash":{},"data":data}) : helper)))
+    + "\">";
+  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : alias2),(options={"name":"kanjiLinks","hash":{},"fn":container.program(30, data, 0, blockParams, depths),"inverse":container.noop,"data":data}),(typeof helper === alias3 ? helper.call(alias1,options) : helper));
+  if (!helpers.kanjiLinks) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
+  if (stack1 != null) { buffer += stack1; }
+  return buffer + "</span><!--\n     --><div class=\"peek-wrapper\">"
+    + ((stack1 = helpers["if"].call(alias1,(depths[1] != null ? depths[1].playback : depths[1]),{"name":"if","hash":{},"fn":container.program(33, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.termTags : depth0),{"name":"if","hash":{},"fn":container.program(35, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.frequencies : depth0),{"name":"if","hash":{},"fn":container.program(38, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "</div><!--\n     --><span class=\""
+    + ((stack1 = helpers["if"].call(alias1,(data && data.last),{"name":"if","hash":{},"fn":container.program(41, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "\">、</span><!--\n --></div>";
+},"30":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options;
 
-  stack1 = ((helper = (helper = helpers.furigana || (depth0 != null ? depth0.furigana : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"furigana","hash":{},"fn":container.program(18, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+  stack1 = ((helper = (helper = helpers.furigana || (depth0 != null ? depth0.furigana : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"furigana","hash":{},"fn":container.program(31, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
   if (!helpers.furigana) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { return stack1; }
   else { return ''; }
-},"18":function(container,depth0,helpers,partials,data) {
+},"31":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return ((stack1 = container.lambda(depth0, depth0)) != null ? stack1 : "");
-},"20":function(container,depth0,helpers,partials,data) {
+},"33":function(container,depth0,helpers,partials,data) {
+    return "<a href=\"#\" class=\"action-play-audio\"><img src=\"/mixed/img/play-audio.png\" title=\"Play audio\" alt></a>";
+},"35":function(container,depth0,helpers,partials,data) {
+    var stack1;
+
+  return "<div class=\"tags\">"
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.termTags : depth0),{"name":"each","hash":{},"fn":container.program(36, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "</div>";
+},"36":function(container,depth0,helpers,partials,data) {
+    var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
+
+  return "                <span class=\"label label-default tag-"
+    + alias4(((helper = (helper = helpers.category || (depth0 != null ? depth0.category : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"category","hash":{},"data":data}) : helper)))
+    + "\" title=\""
+    + alias4(((helper = (helper = helpers.notes || (depth0 != null ? depth0.notes : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"notes","hash":{},"data":data}) : helper)))
+    + "\">"
+    + alias4(((helper = (helper = helpers.name || (depth0 != null ? depth0.name : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data}) : helper)))
+    + "</span>\n";
+},"38":function(container,depth0,helpers,partials,data) {
+    var stack1;
+
+  return "<div class=\"frequencies\">"
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(39, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "</div>";
+},"39":function(container,depth0,helpers,partials,data) {
+    var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
+
+  return "                <span class=\"label label-default tag-frequency\">"
+    + alias4(((helper = (helper = helpers.dictionary || (depth0 != null ? depth0.dictionary : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"dictionary","hash":{},"data":data}) : helper)))
+    + ":"
+    + alias4(((helper = (helper = helpers.frequency || (depth0 != null ? depth0.frequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"frequency","hash":{},"data":data}) : helper)))
+    + "</span>\n";
+},"41":function(container,depth0,helpers,partials,data) {
+    return "invisible";
+},"43":function(container,depth0,helpers,partials,data) {
+    var stack1, helper, options, alias1=depth0 != null ? depth0 : (container.nullContext || {}), buffer = 
+  "    <div class=\"expression\">";
+  stack1 = ((helper = (helper = helpers.kanjiLinks || (depth0 != null ? depth0.kanjiLinks : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"kanjiLinks","hash":{},"fn":container.program(30, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(alias1,options) : helper));
+  if (!helpers.kanjiLinks) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
+  if (stack1 != null) { buffer += stack1; }
+  return buffer + "</div>\n"
+    + ((stack1 = helpers["if"].call(alias1,(depth0 != null ? depth0.termTags : depth0),{"name":"if","hash":{},"fn":container.program(44, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"44":function(container,depth0,helpers,partials,data) {
+    var stack1;
+
+  return "    <div style=\"display: inline-block;\">\n"
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.termTags : depth0),{"name":"each","hash":{},"fn":container.program(45, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + "    </div>\n";
+},"45":function(container,depth0,helpers,partials,data) {
+    var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
+
+  return "        <span class=\"label label-default tag-"
+    + alias4(((helper = (helper = helpers.category || (depth0 != null ? depth0.category : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"category","hash":{},"data":data}) : helper)))
+    + "\" title=\""
+    + alias4(((helper = (helper = helpers.notes || (depth0 != null ? depth0.notes : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"notes","hash":{},"data":data}) : helper)))
+    + "\">"
+    + alias4(((helper = (helper = helpers.name || (depth0 != null ? depth0.name : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"name","hash":{},"data":data}) : helper)))
+    + "</span>\n";
+},"47":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div class=\"reasons\">\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.reasons : depth0),{"name":"each","hash":{},"fn":container.program(21, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.reasons : depth0),{"name":"each","hash":{},"fn":container.program(48, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"21":function(container,depth0,helpers,partials,data) {
+},"48":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "        <span class=\"reasons\">"
     + container.escapeExpression(container.lambda(depth0, depth0))
     + "</span> "
-    + ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.last),{"name":"unless","hash":{},"fn":container.program(22, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.last),{"name":"unless","hash":{},"fn":container.program(49, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n";
-},"22":function(container,depth0,helpers,partials,data) {
+},"49":function(container,depth0,helpers,partials,data) {
     return "&laquo;";
-},"24":function(container,depth0,helpers,partials,data) {
+},"51":function(container,depth0,helpers,partials,data) {
     var stack1;
 
   return "    <div>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(25, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.frequencies : depth0),{"name":"each","hash":{},"fn":container.program(52, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "    </div>\n";
-},"25":function(container,depth0,helpers,partials,data) {
+},"52":function(container,depth0,helpers,partials,data) {
     var helper, alias1=depth0 != null ? depth0 : (container.nullContext || {}), alias2=helpers.helperMissing, alias3="function", alias4=container.escapeExpression;
 
   return "        <span class=\"label label-default tag-frequency\">"
@@ -311,62 +422,67 @@ templates['terms.html'] = template({"1":function(container,depth0,helpers,partia
     + ":"
     + alias4(((helper = (helper = helpers.frequency || (depth0 != null ? depth0.frequency : depth0)) != null ? helper : alias2),(typeof helper === alias3 ? helper.call(alias1,{"name":"frequency","hash":{},"data":data}) : helper)))
     + "</span>\n";
-},"27":function(container,depth0,helpers,partials,data) {
+},"54":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(28, data, 0),"inverse":container.program(31, data, 0),"data":data})) != null ? stack1 : "");
-},"28":function(container,depth0,helpers,partials,data) {
+  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["1"] : stack1),{"name":"if","hash":{},"fn":container.program(55, data, 0, blockParams, depths),"inverse":container.program(58, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+},"55":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "        <ol>\n"
-    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(29, data, 0),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+    + ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(56, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "        </ol>\n";
-},"29":function(container,depth0,helpers,partials,data) {
+},"56":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "            <li>"
-    + ((stack1 = container.invokePartial(partials.definition,depth0,{"name":"definition","data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
+    + ((stack1 = container.invokePartial(partials.definition,depth0,{"name":"definition","hash":{"compactGlossaries":(depths[1] != null ? depths[1].compactGlossaries : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
     + "</li>\n";
-},"31":function(container,depth0,helpers,partials,data) {
+},"58":function(container,depth0,helpers,partials,data) {
     var stack1;
 
-  return ((stack1 = container.invokePartial(partials.definition,((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["0"] : stack1),{"name":"definition","data":data,"indent":"        ","helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
-},"33":function(container,depth0,helpers,partials,data) {
+  return ((stack1 = container.invokePartial(partials.definition,((stack1 = (depth0 != null ? depth0.definitions : depth0)) != null ? stack1["0"] : stack1),{"name":"definition","hash":{"compactGlossaries":(depth0 != null ? depth0.compactGlossaries : depth0)},"data":data,"indent":"        ","helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
+},"60":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = container.invokePartial(partials.definition,depth0,{"name":"definition","data":data,"indent":"        ","helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
-},"35":function(container,depth0,helpers,partials,data) {
+  return ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.merged : depth0),{"name":"if","hash":{},"fn":container.program(54, data, 0, blockParams, depths),"inverse":container.program(61, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+},"61":function(container,depth0,helpers,partials,data) {
+    var stack1;
+
+  return ((stack1 = container.invokePartial(partials.definition,depth0,{"name":"definition","hash":{"compactGlossaries":(depth0 != null ? depth0.compactGlossaries : depth0)},"data":data,"indent":"        ","helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "")
+    + "        ";
+},"63":function(container,depth0,helpers,partials,data) {
     var stack1, helper, options, buffer = 
   "    <pre>";
-  stack1 = ((helper = (helper = helpers.dumpObject || (depth0 != null ? depth0.dumpObject : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"dumpObject","hash":{},"fn":container.program(18, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
+  stack1 = ((helper = (helper = helpers.dumpObject || (depth0 != null ? depth0.dumpObject : depth0)) != null ? helper : helpers.helperMissing),(options={"name":"dumpObject","hash":{},"fn":container.program(31, data, 0),"inverse":container.noop,"data":data}),(typeof helper === "function" ? helper.call(depth0 != null ? depth0 : (container.nullContext || {}),options) : helper));
   if (!helpers.dumpObject) { stack1 = helpers.blockHelperMissing.call(depth0,stack1,options)}
   if (stack1 != null) { buffer += stack1; }
   return buffer + "</pre>\n";
-},"37":function(container,depth0,helpers,partials,data,blockParams,depths) {
+},"65":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(38, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
-},"38":function(container,depth0,helpers,partials,data,blockParams,depths) {
+  return ((stack1 = helpers.each.call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"each","hash":{},"fn":container.program(66, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "");
+},"66":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
-  return ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.first),{"name":"unless","hash":{},"fn":container.program(39, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
+  return ((stack1 = helpers.unless.call(depth0 != null ? depth0 : (container.nullContext || {}),(data && data.first),{"name":"unless","hash":{},"fn":container.program(67, data, 0, blockParams, depths),"inverse":container.noop,"data":data})) != null ? stack1 : "")
     + "\n"
-    + ((stack1 = container.invokePartial(partials.term,depth0,{"name":"term","hash":{"playback":(depths[1] != null ? depths[1].playback : depths[1]),"addable":(depths[1] != null ? depths[1].addable : depths[1]),"grouped":(depths[1] != null ? depths[1].grouped : depths[1]),"debug":(depths[1] != null ? depths[1].debug : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
-},"39":function(container,depth0,helpers,partials,data) {
+    + ((stack1 = container.invokePartial(partials.term,depth0,{"name":"term","hash":{"compactGlossaries":(depths[1] != null ? depths[1].compactGlossaries : depths[1]),"playback":(depths[1] != null ? depths[1].playback : depths[1]),"addable":(depths[1] != null ? depths[1].addable : depths[1]),"merged":(depths[1] != null ? depths[1].merged : depths[1]),"grouped":(depths[1] != null ? depths[1].grouped : depths[1]),"debug":(depths[1] != null ? depths[1].debug : depths[1])},"data":data,"helpers":helpers,"partials":partials,"decorators":container.decorators})) != null ? stack1 : "");
+},"67":function(container,depth0,helpers,partials,data) {
     return "<hr>";
-},"41":function(container,depth0,helpers,partials,data) {
+},"69":function(container,depth0,helpers,partials,data) {
     return "<p class=\"note\">No results found.</p>\n";
 },"compiler":[7,">= 4.0.0"],"main":function(container,depth0,helpers,partials,data,blockParams,depths) {
     var stack1;
 
   return "\n\n"
-    + ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"if","hash":{},"fn":container.program(37, data, 0, blockParams, depths),"inverse":container.program(41, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
+    + ((stack1 = helpers["if"].call(depth0 != null ? depth0 : (container.nullContext || {}),(depth0 != null ? depth0.definitions : depth0),{"name":"if","hash":{},"fn":container.program(65, data, 0, blockParams, depths),"inverse":container.program(69, data, 0, blockParams, depths),"data":data})) != null ? stack1 : "");
 },"main_d":  function(fn, props, container, depth0, data, blockParams, depths) {
 
   var decorators = container.decorators;
 
   fn = decorators.inline(fn,props,container,{"name":"inline","hash":{},"fn":container.program(1, data, 0, blockParams, depths),"inverse":container.noop,"args":["definition"],"data":data}) || fn;
-  fn = decorators.inline(fn,props,container,{"name":"inline","hash":{},"fn":container.program(12, data, 0, blockParams, depths),"inverse":container.noop,"args":["term"],"data":data}) || fn;
+  fn = decorators.inline(fn,props,container,{"name":"inline","hash":{},"fn":container.program(22, data, 0, blockParams, depths),"inverse":container.noop,"args":["term"],"data":data}) || fn;
   return fn;
   }
 
diff --git a/ext/bg/js/translator.js b/ext/bg/js/translator.js
index c915dbc0..005dd5de 100644
--- a/ext/bg/js/translator.js
+++ b/ext/bg/js/translator.js
@@ -37,6 +37,7 @@ class Translator {
     }
 
     async findTermsGrouped(text, dictionaries, alphanumeric) {
+        const options = await apiOptionsGet();
         const titles = Object.keys(dictionaries);
         const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
 
@@ -45,9 +46,118 @@ class Translator {
             await this.buildTermFrequencies(definition, titles);
         }
 
+        if (options.general.compactTags) {
+            for (const definition of definitionsGrouped) {
+                dictTermsCompressTags(definition.definitions);
+            }
+        }
+
         return {length, definitions: definitionsGrouped};
     }
 
+    async findTermsMerged(text, dictionaries, alphanumeric) {
+        const options = await apiOptionsGet();
+        const secondarySearchTitles = Object.keys(options.dictionaries).filter(dict => options.dictionaries[dict].allowSecondarySearches);
+        const titles = Object.keys(dictionaries);
+        const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
+
+        const definitionsBySequence = dictTermsMergeBySequence(definitions, options.general.mainDictionary);
+
+        const definitionsMerged = [];
+        const mergedByTermIndices = new Set();
+        for (const sequence in definitionsBySequence) {
+            if (sequence < 0) {
+                continue;
+            }
+
+            const result = definitionsBySequence[sequence];
+
+            const rawDefinitionsBySequence = await this.database.findTermsBySequence(Number(sequence), options.general.mainDictionary);
+
+            for (const definition of rawDefinitionsBySequence) {
+                const tags = await this.expandTags(definition.definitionTags, definition.dictionary);
+                tags.push(dictTagBuildSource(definition.dictionary));
+                definition.definitionTags = tags;
+            }
+
+            const definitionsByGloss = dictTermsMergeByGloss(result, rawDefinitionsBySequence);
+
+            const secondarySearchResults = [];
+            if (secondarySearchTitles.length > 0) {
+                for (const expression of result.expressions.keys()) {
+                    if (expression === text) {
+                        continue;
+                    }
+
+                    for (const reading of result.expressions.get(expression).keys()) {
+                        for (const definition of await this.database.findTermsExact(expression, reading, secondarySearchTitles)) {
+                            const tags = await this.expandTags(definition.definitionTags, definition.dictionary);
+                            tags.push(dictTagBuildSource(definition.dictionary));
+                            definition.definitionTags = tags;
+                            secondarySearchResults.push(definition);
+                        }
+                    }
+                }
+            }
+
+            dictTermsMergeByGloss(result, definitionsBySequence['-1'].concat(secondarySearchResults), definitionsByGloss, mergedByTermIndices);
+
+            for (const gloss in definitionsByGloss) {
+                const definition = definitionsByGloss[gloss];
+                dictTagsSort(definition.definitionTags);
+                result.definitions.push(definition);
+            }
+
+            dictTermsSort(result.definitions, dictionaries);
+
+            const expressions = [];
+            for (const expression of result.expressions.keys()) {
+                for (const reading of result.expressions.get(expression).keys()) {
+                    const tags = await this.expandTags(result.expressions.get(expression).get(reading), result.dictionary);
+                    expressions.push({
+                        expression: expression,
+                        reading: reading,
+                        termTags: dictTagsSort(tags),
+                        termFrequency: (score => {
+                            if (score > 0) {
+                                return 'popular';
+                            } else if (score < 0) {
+                                return 'rare';
+                            } else {
+                                return 'normal';
+                            }
+                        })(tags.map(tag => tag.score).reduce((p, v) => p + v, 0))
+                    });
+                }
+            }
+
+            result.expressions = expressions;
+
+            result.expression = Array.from(result.expression);
+            result.reading = Array.from(result.reading);
+
+            definitionsMerged.push(result);
+        }
+
+        const strayDefinitions = definitionsBySequence['-1'].filter((definition, index) => !mergedByTermIndices.has(index));
+        for (const groupedDefinition of dictTermsGroup(strayDefinitions, dictionaries)) {
+            groupedDefinition.expressions = [{expression: groupedDefinition.expression, reading: groupedDefinition.reading}];
+            definitionsMerged.push(groupedDefinition);
+        }
+
+        for (const definition of definitionsMerged) {
+            await this.buildTermFrequencies(definition, titles);
+        }
+
+        if (options.general.compactTags) {
+            for (const definition of definitionsMerged) {
+                dictTermsCompressTags(definition.definitions);
+            }
+        }
+
+        return {length, definitions: dictTermsSort(definitionsMerged)};
+    }
+
     async findTermsSplit(text, dictionaries, alphanumeric) {
         const titles = Object.keys(dictionaries);
         const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
@@ -78,8 +188,9 @@ class Translator {
         let definitions = [];
         for (const deinflection of deinflections) {
             for (const definition of deinflection.definitions) {
-                const tags = await this.expandTags(definition.tags, definition.dictionary);
-                tags.push(dictTagBuildSource(definition.dictionary));
+                const definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
+                definitionTags.push(dictTagBuildSource(definition.dictionary));
+                const termTags = await this.expandTags(definition.termTags, definition.dictionary);
 
                 definitions.push({
                     source: deinflection.source,
@@ -90,7 +201,9 @@ class Translator {
                     expression: definition.expression,
                     reading: definition.reading,
                     glossary: definition.glossary,
-                    tags: dictTagsSort(tags)
+                    definitionTags: dictTagsSort(definitionTags),
+                    termTags: dictTagsSort(termTags),
+                    sequence: definition.sequence
                 });
             }
         }
@@ -158,14 +271,23 @@ class Translator {
     }
 
     async buildTermFrequencies(definition, titles) {
-        definition.frequencies = [];
-        for (const meta of await this.database.findTermMeta(definition.expression, titles)) {
-            if (meta.mode === 'freq') {
-                definition.frequencies.push({
-                    expression: meta.expression,
-                    frequency: meta.data,
-                    dictionary: meta.dictionary
-                });
+        let terms = [];
+        if (definition.expressions) {
+            terms = terms.concat(definition.expressions);
+        } else {
+            terms.push(definition);
+        }
+
+        for (const term of terms) {
+            term.frequencies = [];
+            for (const meta of await this.database.findTermMeta(term.expression, titles)) {
+                if (meta.mode === 'freq') {
+                    term.frequencies.push({
+                        expression: meta.expression,
+                        frequency: meta.data,
+                        dictionary: meta.dictionary
+                    });
+                }
             }
         }
     }
diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
index f44582eb..091137ed 100644
--- a/ext/bg/js/util.js
+++ b/ext/bg/js/util.js
@@ -26,6 +26,43 @@ function utilIsolate(data) {
     return JSON.parse(JSON.stringify(data));
 }
 
+function utilSetEqual(setA, setB) {
+    if (setA.size !== setB.size) {
+        return false;
+    }
+
+    for (const value of setA) {
+        if (!setB.has(value)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+function utilSetIntersection(setA, setB) {
+    return new Set(
+        [...setA].filter(value => setB.has(value))
+    );
+}
+
+function utilSetDifference(setA, setB) {
+    return new Set(
+        [...setA].filter(value => !setB.has(value))
+    );
+}
+
+function utilStringHashCode(string) {
+    let hashCode = 0;
+
+    for (let i = 0, charCode = string.charCodeAt(i); i < string.length; charCode = string.charCodeAt(++i)) {
+        hashCode = ((hashCode << 5) - hashCode) + charCode;
+        hashCode |= 0;
+    }
+
+    return hashCode;
+}
+
 function utilBackend() {
     return chrome.extension.getBackgroundPage().yomichan_backend;
 }
@@ -46,6 +83,10 @@ function utilDatabaseGetTitles() {
     return utilBackend().translator.database.getTitles();
 }
 
+function utilDatabaseGetTitlesWithSequences() {
+    return utilBackend().translator.database.getTitlesWithSequences();
+}
+
 function utilDatabasePurge() {
     return utilBackend().translator.database.purge();
 }
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index 4315d74b..f430d5e2 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -36,7 +36,11 @@
                 </div>
 
                 <div class="checkbox">
-                    <label><input type="checkbox" id="group-terms-results"> Group term results</label>
+                    <label><input type="checkbox" id="compact-tags"> Compact tags</label>
+                </div>
+
+                <div class="checkbox">
+                    <label><input type="checkbox" id="compact-glossaries"> Compact glossaries</label>
                 </div>
 
                 <div class="checkbox">
@@ -48,6 +52,15 @@
                 </div>
 
                 <div class="form-group">
+                    <label for="result-output-mode">Result grouping</label>
+                    <select class="form-control" id="result-output-mode">
+                        <option value="group">Group results by term-reading pairs</option>
+                        <option value="merge">Group results by main dictionary entry ID (experimental)</option>
+                        <option value="split">Split definitions to their own results</option>
+                    </select>
+                </div>
+
+                <div class="form-group">
                     <label for="audio-playback-source">Audio playback source</label>
                     <select class="form-control" id="audio-playback-source">
                         <option value="disabled">Disabled</option>
@@ -127,6 +140,11 @@
                     <h3>Dictionaries</h3>
                 </div>
 
+                <div class="form-group options-merge">
+                    <label for="main-dictionary">Main dictionary</label>
+                    <select class="form-control" id="main-dictionary"></select>
+                </div>
+
                 <p class="help-block">
                     Yomichan can import and use a variety of dictionary formats. Unneeded dictionaries can be disabled,
                     or you can simply <a href="#" id="dict-purge-link">purge the database</a> to delete everything.