feat(diff): more comprehensive highlights

lockfile.json

@@ -111,7 +111,7 @@
     "revision": "affb6ee38d629c9296749767ab832d69bb0d9ea8"
   },
   "diff": {
-    "revision": "710e881127512bda8157096e26c1f3e91702823a"
+    "revision": "629676fc3919606964231b2c7b9677d6998a2cb4"
   },
   "disassembly": {
     "revision": "0229c0211dba909c5d45129ac784a3f4d49c243a"

queries/diff/highlights.scm

@@ -12,4 +12,35 @@
 
 (location) @attribute
 
-(command) @function
+(command
+  "diff" @function
+  (argument) @variable.parameter)
+
+(filename) @string.special.path
+
+(mode) @number
+
+[
+  ".."
+  "+"
+  "++"
+  "+++"
+  "++++"
+  "-"
+  "--"
+  "---"
+  "----"
+] @punctuation.special
+
+[
+  (binary_change)
+  (similarity)
+  (file_change)
+] @label
+
+(index
+  "index" @keyword)
+
+(similarity
+  (score) @number
+  "%" @number)