Why does emacs align weird after array in a hash?

Question

If I get emacs 24.1.1 to indent the following

$config = {
    b  => [
           "123",
           ],
    c => "123",
    };

then it will turn it into

$config = {
    b  => [
           "123",
           ],
        c => "123",
    };

Question

Why does it not indent so b and c is aligned?

Update

Enabled minor modes: Auto-Composition Auto-Compression Auto-Encryption                                   
File-Name-Shadow Font-Lock Global-Font-Lock Line-Number Menu-Bar                                         
Transient-Mark                                                                                           

(Information about these minor modes follows the major mode info.)

Perl mode defined in `perl-mode.el':
Major mode for editing Perl code.

This struck me as similar to [this question](http://stackoverflow.com/q/24494901/113848), though the root cause of this behaviour is probably different. — legoscia, Jul 08 '14 at 13:21
Feel free to give us some more info such as which major mode is in use. — Stefan, Jul 08 '14 at 14:13
@Stefan I have never heard about major mode. is what I have just added what you are asking for? — Jasmine Lognnes, Jul 08 '14 at 15:16
Yes, thanks. The main problem is that it was not even clear which language you were writing in. Not being sufficiently familiar with all languages, to me it looked like it could be PHP, or Perl, or ... — Stefan, Jul 08 '14 at 15:36

score 3 · Accepted Answer · answered Jul 08 '14 at 16:55

3

Because the indentation algorithm did not understand this case.

I have just installed a patch to perl-mode.el (in Emacs's trunk, i.e. won't be in the upcoming Emacs-24.4 but only in Emacs-24.5) which seems to fix it. You can try the new code at http://bzr.savannah.gnu.org/lh/emacs/trunk/annotate/head:/lisp/progmodes/perl-mode.el.

answered Jul 08 '14 at 16:55

Stefan

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If I add that file to one of the search paths, then perl mode is disabled. Do I need to do something besides adding the `perl-mode.el`? – Jasmine Lognnes Jul 09 '14 at 10:36
1

No, that should be it. What happens if you `M-x load-file RET ..the/new/perl-mode.el RET`? – Stefan Jul 09 '14 at 13:31
That worked =) How do I add it to my `.emacs` so it is loaded correct? – Jasmine Lognnes Jul 10 '14 at 11:38
1

Hmm.. don't know why just putting the file in the search path disables the mode while loading it explicitly works fine. The simplest is probably to `(load "../the/new/perkl-mode.el")`. Otherwise, try to ask for debugging help on gnu.emacs.help (which tends to work better for that than stackoverflow). – Stefan Jul 10 '14 at 14:55

score 2 · Answer 2 · answered Jul 08 '14 at 15:39

2

The solution is to use cperl-mode instead of perl-mode: put

(fset 'perl-mode 'cperl-mode)

in your .emacs.

answered Jul 08 '14 at 15:39

sds

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This works, but also changes how indentation is done on `b`. Before `b` were at column 5 and after it is aligned with the `{`. Can that be avoided? – Jasmine Lognnes Jul 09 '14 at 10:35

Why does emacs align weird after array in a hash?

2 Answers2