From 87002f70a3ac026295ea0eb4289353cbe62d1341 Mon Sep 17 00:00:00 2001 From: Simon Marshall Date: Thu, 4 Dec 1997 19:47:59 +0000 Subject: [PATCH] Deal with `#'s in variable references. --- lisp/progmodes/sh-script.el | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el index fa53fbca6d8..4898a16ac94 100644 --- a/lisp/progmodes/sh-script.el +++ b/lisp/progmodes/sh-script.el @@ -628,7 +628,14 @@ See `sh-feature'.") (defconst sh-font-lock-syntactic-keywords ;; Mark a `#' character as having punctuation syntax in a variable reference. - '(("\\$[({]?\\(#\\)" 1 (1 . nil)))) + ;; Really we should do this properly. From Chet Ramey and Brian Fox: + ;; "A `#' begins a comment when it is unquoted and at the beginning of a + ;; word. In the shell, words are separated by metacharacters." + ;; To do this in a regexp would be slow as it would be anchored to the right. + ;; But I can't be bothered to write a function to do it properly and + ;; efficiently. So we only do it properly for `#' in variable references and + ;; do it efficiently by anchoring the regexp to the left. + '(("\\${?[^}#\n\t ]*\\(##?\\)" 1 (1 . nil)))) ;; mode-command and utility functions -- 2.39.2