Improve regular expression to avoid false positives

danielmartin · taku0 · commit 9757df9e4920 · 2020-11-23T14:43:24.000+09:00
diff --git a/swift-mode-font-lock.el b/swift-mode-font-lock.el
@@ -667,7 +667,7 @@ Excludes true, false, and keywords begin with a number sign.")
      'swift-mode:property-access-face)
 
     ;; Make negation chars easier to see
-    ("\\(?:^\\|[^[:alnum:]_]\\)\\(!+\\)[^=]"
+    ("\\(?:^\\|\\s-\\|\\s(\\|\\s>\\|[,:;]\\)\\(!+\\)[^=]"
      1
      'swift-mode:negation-char-face))
   "Swift mode keywords for Font Lock.")

Original file line number	Diff line number	Diff line change
`@@ -667,7 +667,7 @@ Excludes true, false, and keywords begin with a number sign.")`
`667`	`667`	`'swift-mode:property-access-face)`
`668`	`668`
`669`	`669`	`;; Make negation chars easier to see`
`670`		`- ("\\(?:^\\\|[^[:alnum:]_]\\)\\(!+\\)[^=]"`
	`670`	`+ ("\\(?:^\\\|\\s-\\\|\\s(\\\|\\s>\\\|[,:;]\\)\\(!+\\)[^=]"`
`671`	`671`	`1`
`672`	`672`	`'swift-mode:negation-char-face))`
`673`	`673`	`"Swift mode keywords for Font Lock.")`