GNU bug report logs - #16938
24.3.50; Support the Dash shell shebang and .[bd]sh file types

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: John Yates <john <at> yates-sheets.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; Support the Dash shell shebang and .[bd]sh file types
Date: Tue, 4 Mar 2014 13:14:34 -0500

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#!/bin/sh is interpreted inconsistently across platforms.  In the rpm
world it most often maps to /bin/bash.  In the Debian universe it maps
to /bin/dash.  Bash and dash have subtle differences that have bitten
me often enough to cause me now to use precise shebangs (#!/bin/bash or
#!/bin/dash) and to suffix my files with either .bsh or .dsh.

At present emacs' interpreter-mode-alist knows nothing about dash and
its auto-mode-alist is ignorant of both the .bsh and .dsh suffixes.

For interpreter-mode-alist I suggest adding the follow entry:

     ("dash" . sh-mode)


For auto-mode-alist I suggest changing the follow entry:

     ("\\.[ck]?sh\\'\\|\\.shar\\'\\|/\\.z?profile\\'" . sh-mode)

to

     ("\\.[bcdk]?sh\\'\\|\\.shar\\'\\|/\\.z?profile\\'" . sh-mode)

/john

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