cperl-mode + smartparens issue

[alexrkopp-xx]

Hello,

If you switch into cperl-mode and type the following:

if (0) {

It will be automatically changed to

if (0) {}}

Note the two closing curly braces. Switching into perl-mode and typing that same line yields proper behavior.

Any ideas?

[alexrkopp-xx]

Anyone have any idea what is causing this?

[jasonblewis]

I see this behaviour too. I think its related to smartparens as I don't use spacemacs

[spacebat]

I think its a conflict between cperl's electric braces and related options, and smartparens' auto pairing. I've disabled all of cperl's electric settings.

[Fuco1]

It might very well be what @spacebat describes. Smartparens is quite aggresive in its own enforcing rules, since most of the time the "electric" stuff is quite, well, idiotic. The apparently random order of execution of hooks doesn't help one bit either... it is most recomended to turn off any electric stuff while using SP.

[pasja]

My quick&dirty solution:
(define-key cperl-mode-map "{" 'nil)

[TheBB]

Since Spacemacs doesn't have a layer for this mode, and since there's an easy workaround from @pasja, I am liable to close this. If the time comes when Spacemacs has official Perl support we can revisit.

For future visitors, the workaround should be (in user-config):

(with-eval-after-load 'cperl-mode
  (define-key cperl-mode-map "{" nil))

[benlind]

I recently had this problem. I have electric-pair-mode on with cperl-mode, and I was getting {}} when typing { on an empty line.

This solved my problem:

(add-hook 'cperl-mode-hook (lambda () (local-unset-key (kbd "{"))))

[CeleritasCelery]

This solution will allow electric-pair-mode to still work when smartparens is toggled off

(with-eval-after-load 'cperl-mode
  (add-hook 'smartparens-enabled-hook  (lambda () (define-key cperl-mode-map "{" nil)))
  (add-hook 'smartparens-disabled-hook  (lambda () (define-key cperl-mode-map "{" 'cperl-electric-lbrace))))