From 977b63e96c5ad26035b21444e896a892c1847738 Mon Sep 17 00:00:00 2001
From: Loek Le Blansch <loek@pipeframe.xyz>
Date: Tue, 17 Dec 2024 20:20:32 +0100
Subject: update libraries

---
 .gitmodules    | 4 ++++
 lib/fontconfig | 1 +
 readme.md      | 2 +-
 3 files changed, 6 insertions(+), 1 deletion(-)
 create mode 160000 lib/fontconfig

diff --git a/.gitmodules b/.gitmodules
index bd6e7f7..8155600 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -26,3 +26,7 @@
 	path = lib/whereami/lib
 	url = https://github.com/gpakosz/whereami
 	shallow = true
+[submodule "lib/fontconfig"]
+	path = lib/fontconfig
+	url = https://gitlab.freedesktop.org/fontconfig/fontconfig.git
+	shallow = true
diff --git a/lib/fontconfig b/lib/fontconfig
new file mode 160000
index 0000000..72b9a48
--- /dev/null
+++ b/lib/fontconfig
@@ -0,0 +1 @@
+Subproject commit 72b9a48f57de6204d99ce1c217b5609ee92ece9b
diff --git a/readme.md b/readme.md
index 984a368..373c682 100644
--- a/readme.md
+++ b/readme.md
@@ -33,6 +33,7 @@ This project uses the following libraries
 |Google Test (`GTest`)|1.15.2|
 |Berkeley DB (`libdb`)|5.3.21|
 |Where Am I?|(latest git `master` version)
+|fontconfig|2.15.0|
 
 > [!NOTE]
 > Most of these libraries are likely available from your package manager if you
@@ -60,7 +61,6 @@ Then, follow these steps for each library you want to install:
    $ cd lib/googletest
    $ cd lib/sdl2
    $ cd lib/soloud/contrib
-   $ cd lib/sdl_ttf
    $ cd lib/sdl_image
    $ cd lib/sdl_ttf
    $ cd lib/whereami
-- 
cgit v1.2.3


From 81404db80bbf9463c3d535ae389e7fbb753a902c Mon Sep 17 00:00:00 2001
From: Loek Le Blansch <loek@pipeframe.xyz>
Date: Tue, 17 Dec 2024 20:30:13 +0100
Subject: update contributing.md

---
 contributing.md | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/contributing.md b/contributing.md
index 0faed2b..5555892 100644
--- a/contributing.md
+++ b/contributing.md
@@ -827,6 +827,32 @@ that you can click on to open them.
   int bar = foo[0];
   ```
   </td></tr></table></details>
+- <details><summary>
+  Always explicitly check against <code>NULL</code> (for C APIs) or
+  <code>nullptr</code> (for C++ APIs) when checking if a pointer is valid
+  </summary><table><tr><th>Good</th><th>Bad</th></tr><tr><td>
+
+  ```cpp
+  string foo = "Hello world";
+  if (foo.c_str() == nullptr)
+    // ...
+
+  void * bar = malloc();
+  if (bar == NULL)
+    // ...
+  ```
+  </td><td>
+
+  ```cpp
+  string foo = "Hello world";
+  if (!foo.c_str())
+    // ...
+
+  void * bar = malloc();
+  if (!bar)
+    // ...
+  ```
+  </td></tr></table></details>
 
 ## CMakeLists-specific
 
-- 
cgit v1.2.3