bug#21793: Emacs hangs in sh-mode

bug#21793: Emacs hangs in sh-mode

[jun]

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Run emacs with "emacs -Q". Open the attached file. Turn on show-paren-mode. 
Then let cursor stay on word "while" or "do". Emacs hangs.

Emacs version: 24.5 on Linux.

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#!/bin/sh

while [ 1 -gt 0]
do

bug#21793: Emacs hangs in sh-mode

[Tassilo Horn]

"jun" <netjunegg@qq.com> writes:

Hi!

> Run emacs with "emacs -Q". Open the attached file. Turn on
> show-paren-mode.  Then let cursor stay on word "while" or "do". Emacs
> hangs.
>
> Emacs version: 24.5 on Linux.
> #!/bin/sh
>
> while [ 1 -gt 0]
> do

I can't reproduce this with emacs 24.5, but given your example and
description, I think this is a duplicate of

  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=21747

which I have fixed in 1bab3cefc133e06aaf4a48efb1623d1b458ab212.

  http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=1bab3cefc133e06aaf4a48efb1623d1b458ab212

If you can do that, could you please check if applying that patch to
your sh-script.el fixes the problem?  (Be sure to recompile it
afterwards.)

Bye,
Tassilo

bug#21793: Emacs hangs in sh-mode

[Glenn Morris]

Hang in 24.5; no hang in current master.
However current master highlights a bunch of things that aren't parens.
Eg the entire word "while" in paren mismatch face.

bug#21793: Emacs hangs in sh-mode

[Tassilo Horn]

Glenn Morris <rgm@gnu.org> writes:

> Hang in 24.5; no hang in current master.
> However current master highlights a bunch of things that aren't parens.
> Eg the entire word "while" in paren mismatch face.

I think that's intensional with SMIE, e.g., in sh-mode open/closing
"parens" are "do" and "done", etc.

Bye,
Tassilo

bug#21793: Emacs hangs in sh-mode

[Glenn Morris]

Tassilo Horn wrote:

> Glenn Morris <rgm@gnu.org> writes:
>
>> Hang in 24.5; no hang in current master.
>> However current master highlights a bunch of things that aren't parens.
>> Eg the entire word "while" in paren mismatch face.
>
> I think that's intensional with SMIE, e.g., in sh-mode open/closing
> "parens" are "do" and "done", etc.

Oh, OK. Seems weird and undocumented to me, but there you go.