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bug#31710: 26.1; sh-mode doesn't highlight aliases with dots correctly


From: Andreas Schwab
Subject: bug#31710: 26.1; sh-mode doesn't highlight aliases with dots correctly
Date: Sat, 13 Jul 2019 17:34:35 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2.90 (gnu/linux)

On Jul 13 2019, Lars Ingebrigtsen <address@hidden> wrote:

> Surely foo[....]="bar" isn't valid bash syntax?

Of course it is.

> I've installed the following patch on the Emacs trunk:
>
> diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
> index ae90531a7f..64608f1930 100644
> --- a/lisp/progmodes/sh-script.el
> +++ b/lisp/progmodes/sh-script.el
> @@ -582,7 +582,7 @@ sh-assignment-regexp
>      ;; actually spaces are only supported in let/(( ... ))
>      (ksh88 . ,(concat "\\<\\([[:alnum:]_]+\\)\\(\\[.+\\]\\)?"
>                        "[ \t]*\\(?:[-+*/%&|~^]\\|<<\\|>>\\)?="))
> -    (bash . "\\<\\([[:alnum:]_]+\\)\\(\\[.+\\]\\)?\\+?=")
> +    (bash . "\\<\\([[:alnum:]_]+\\)\\([.+]\\)?\\+?=")

That doesn't make sense.  A dot or a plus isn't a valid character in a
shell variable.

Andreas.

-- 
Andreas Schwab, address@hidden
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