From ee457f606bc2d4dfcaac14d893ad27c75abe18d9 Mon Sep 17 00:00:00 2001
From: Mikko <Andriamanitra@users.noreply.github.com>
Date: Mon, 14 Sep 2026 23:38:54 +0300
Subject: [PATCH] improve vi syntax highlighting (#4222)

* simplify string highlighting to reduce likelihood of false positive matches
* highlight registers
* support more keywords
---
 runtime/syntax/vi.yaml | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/runtime/syntax/vi.yaml b/runtime/syntax/vi.yaml
index 2a828dcd..442b1e4c 100644
--- a/runtime/syntax/vi.yaml
+++ b/runtime/syntax/vi.yaml
@@ -7,25 +7,21 @@ rules:
     - identifier: "[A-Za-z_][A-Za-z0-9_]*[(]+[A-Za-z0-9_:.,\\s]*[)]+"
     - special: "[()]+"
     - statement: "\\b([nvxsoilc]?(nore|un)?map|[nvlx]n|[ico]?no|[cilovx][um]|s?unm)\\b"
-    - statement: "\\b(snor|nun|nm|set|if|endif|let|unlet|source)\\b"
-    - statement: "[!&=?]"
+    - statement: "\\b(is|isnot|fu(nc?|nction)?|if|while|for|try|return|throw|end(if|for|while|try|fu(nc?|nction)?|f)?|au(g|group)|else(if)?|do|in|catch|finally)\\b"
+    - statement: "\\b(snor|nun|nm|set(l|local|global)?|let|command|filetype|colorscheme|syn(tax)?|exe(c|cute)?|ec(ho)?|au(tocmd)?|source|call)\\b"
+    - statement: "[!&=?]|[+<>]="
     - constant.number: "\\b[0-9]+\\b"
 
+    - identifier:
+        start: "@"
+        end: ".|$"
+        rules: []
+
     - comment:
-        start: "(^\"|[ \t]+\" |[ \t]+\"$)"
+        start: "^[ \t]*\""
         end: "$"
         rules: []
 
-    - constant.string:
-        start: "\""
-        end: "\""
-        skip: "\\\\."
-        rules:
-            - constant.specialChar: "\\\\."
-
-    - constant.string:
-        start: "'"
-        end: "'"
-        skip: "\\\\."
-        rules:
-            - constant.specialChar: "\\\\."
+    - constant.string: '"[^"]*"'
+    - constant.string: "'[^']*'"
+    - constant.specialChar: "\\\\."
-- 
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