From 61e575547c2f5e7cfd7b370590eabf3427bbfa2c Mon Sep 17 00:00:00 2001
From: ozacod <47009516+ozacod@users.noreply.github.com>
Date: Tue, 10 Feb 2026 14:44:23 +0300
Subject: [PATCH] languages: Change syntax highlighting for C/C++ preprocessor
 directives (#48109)
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This changes the highlight capture for preprocessor directives from
`@keyword.directive` to `@preproc` in both C and C++.

PR #44043 changed C from `@keyword` to `@keyword.directive` for
consistency with C++, but `@keyword.directive` is still semantically
wrong. Preprocessor directives are not language keywords — they are
instructions to a separate preprocessing phase that runs before
compilation.

Using `@preproc` reflects this distinction and allows themes to style
them independently from actual language keywords like `const`,
`struct`,`if`, etc. This is consistent with how editors like CLion
handle preprocessor directives.

Before:
<img width="710" height="653" alt="before"
src="https://github.com/user-attachments/assets/5c02fc06-bc19-4112-ae53-ad72eb8044e3"
/>

After:
<img width="710" height="653" alt="after"
src="https://github.com/user-attachments/assets/2490e796-7286-4fbb-81b0-387f551cde8f"
/>

Release Notes:

- C/C++: Syntax highlighting for preprocessor directives can now be
tweaked with @preproc capture group.

Co-authored-by: ozacod <ozacod@users.noreply.github.com>
---
 crates/languages/src/c/highlights.scm   | 2 +-
 crates/languages/src/cpp/highlights.scm | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/languages/src/c/highlights.scm b/crates/languages/src/c/highlights.scm
index 0ba43f2f7c6422271d476ba415bea5a42beb9c41..e426bd4f9048a96c09aef297f95c420c9ec21458 100644
--- a/crates/languages/src/c/highlights.scm
+++ b/crates/languages/src/c/highlights.scm
@@ -38,7 +38,7 @@
   "#ifndef"
   "#include"
   (preproc_directive)
-] @keyword.directive
+] @preproc
 
 [
   "="
diff --git a/crates/languages/src/cpp/highlights.scm b/crates/languages/src/cpp/highlights.scm
index 234605409c16a97fa07f126cb79dbd3a1043202d..dbb79e69b04e351ca231b45b21507e305b2cabf5 100644
--- a/crates/languages/src/cpp/highlights.scm
+++ b/crates/languages/src/cpp/highlights.scm
@@ -186,7 +186,7 @@ type: (primitive_type) @type.builtin
   "#ifndef"
   "#include"
   (preproc_directive)
-] @keyword.directive
+] @preproc
 
 (comment) @comment