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Fix three backslash in string issue, fixes #683 #686

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merged 1 commit into from Jun 1, 2015
Merged

Fix three backslash in string issue, fixes #683 #686

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10 changes: 7 additions & 3 deletions haskell-font-lock.el
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Original file line number Diff line number Diff line change
Expand Up @@ -333,13 +333,17 @@ that should be commented under LaTeX-style literate scripts."
;; This still gets fooled with "'"'"'"'"'"', but ... oh well.
("\\Sw\\('\\)\\([^\\'\n]\\|\\\\.[^\\'\n \"}]*\\)\\('\\)" (1 "\"") (3 "\""))
;; Deal with instances of `--' which don't form a comment
("[!#$%&*+./:<=>?@^|~\\-]\\{3,\\}" (0 (cond ((or (nth 3 (syntax-ppss)) (numberp (nth 4 (syntax-ppss))))
;; There are no such instances inside nestable comments or strings
("[!#$%&*+./:<=>?@^|~\\]*--[!#$%&*+./:<=>?@^|~\\-]*" (0 (cond ((or (nth 3 (syntax-ppss)) (numberp (nth 4 (syntax-ppss))))
;; There are no such instances inside
;; nestable comments or strings
nil)
((string-match "\\`-*\\'" (match-string 0))
;; Sequence of hyphens. Do nothing in
;; Sequence of hyphens. Do nothing in
;; case of things like `{---'.
nil)
((string-match "\\`[^-]+--.*" (match-string 0))
;; Extra characters before comment starts
".")
(t ".")))) ; other symbol sequence

;; Implement Haskell Report 'escape' and 'gap' rules. Backslash
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