From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Visuwesh <visuweshm@gmail.com>
Cc: Lars Ingebrigtsen <larsi@gnus.org>, 55764@debbugs.gnu.org
Subject: bug#55764: 29.0.50; sh-mode: Support mksh's alternate case brace syntax
Date: Sat, 30 Sep 2023 23:37:28 -0400 [thread overview]
Message-ID: <jwvcyxz2f3w.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87k09zp3kh.fsf@gmail.com> (Visuwesh's message of "Thu, 02 Jun 2022 19:31:18 +0530")
[-- Attachment #1: Type: text/plain, Size: 521 bytes --]
> To no one's surprise, the patch is not the right approach. IIUC, when I
> use braces, *pattern) thingies are not recognised as "case-)" anymore so
> sh-indent-for-case-label does not get applied. I tried a bit more but I
> only got it to respect the first line but still it is definitely not the
> right approach,
The first part of the puzzle is to fix the syntax-category of the `)` so
it's recognized as a "case-)" rather than a normal ("matched") paren.
The patch below seems to do the trick.
Stefan
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: openbsd-case.patch --]
[-- Type: text/x-diff, Size: 1788 bytes --]
diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
index cc521cb0591..b34be83367a 100644
--- a/lisp/progmodes/sh-script.el
+++ b/lisp/progmodes/sh-script.el
@@ -1053,7 +1053,8 @@ sh-font-lock-paren
;; a normal command rather than the real `in' keyword.
;; I.e. we should look back to try and find the
;; corresponding `case'.
- (and (looking-at ";\\(?:;&?\\|[&|]\\)\\|\\_<in")
+ ;; Also recognize OpenBSD's case X { ... } (bug#55764).
+ (and (looking-at ";\\(?:;&?\\|[&|]\\)\\|\\_<in\\|.{")
;; ";; esac )" is a case that looks
;; like a case-pattern but it's really just a close
;; paren after a case statement. I.e. if we skipped
@@ -2053,9 +2054,9 @@ sh-smie-sh-rules
(sh-var-value 'sh-indent-for-case-label)))
(`(:before . ,(or "(" "{" "[" "while" "if" "for" "case"))
(cond
- ((and (equal token "{") (smie-rule-parent-p "for"))
+ ((and (equal token "{") (smie-rule-parent-p "for" "case"))
(let ((data (smie-backward-sexp "in")))
- (when (equal (nth 2 data) "for")
+ (when (member (nth 2 data) '("for" "case"))
`(column . ,(smie-indent-virtual)))))
((not (smie-rule-prev-p "&&" "||" "|"))
(when (smie-rule-hanging-p)
diff --git a/test/manual/indent/shell.sh b/test/manual/indent/shell.sh
index 5b3fb0e66fb..42a981d312e 100755
--- a/test/manual/indent/shell.sh
+++ b/test/manual/indent/shell.sh
@@ -189,3 +189,10 @@ bar ()
fi
}
+
+case $i { # Bug#55764
+ *pattern)
+ (cd .; echo hi);
+ do1 ;;
+ *pattern2) do2 ;;
+}
next prev parent reply other threads:[~2023-10-01 3:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 13:33 bug#55764: 29.0.50; sh-mode: Support mksh's alternate case brace syntax Visuwesh
2022-06-02 13:40 ` Lars Ingebrigtsen
2022-06-02 14:01 ` Visuwesh
2023-10-01 2:30 ` Stefan Kangas
2023-10-01 3:37 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2024-01-10 22:24 ` Stefan Kangas
2024-01-12 3:13 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
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