cscope-minor-mode not enabled for C in emacs 25

cscope-minor-mode not enabled for C in emacs 25

[stefan.puiu]

Hi, 

I've asked this also on Emacs stackexchange (https://emacs.stackexchange.com/questions/38822/cscope-minor-mode-not-enabled-for-c-in-emacs-25), trying my luck here...

I'm using Emacs 25 on Ubuntu 16.04 and all is mostly well, except that there's one difference between this version and 24 - on Emacs 24, any C/C++ file (*.c or *.cpp) I would open, cscope-minor-mode would be enabled. This isn't the case anymore on 25 (I've checked with 'C-h m'), so I have to type 'M-x cscope-minor-mode' on each new file I open, which is quite annoying. I'm using xcscope-el that ships with this version of Ubuntu (1.1-1, says dpkg output). Any idea what could be happening here? A pointer to where to start looking would be very helpful. 

Thanks in advance,
Stefan.

Re: cscope-minor-mode not enabled for C in emacs 25

[Adam Taylor]

I don't know why it's missing in 25, but you can add it to your c-mode
easily enough by adding the following to your init file:
    (add-hook 'c-mode-hook (lambda () (cscope-minor-mode 1)))

I'll assume you're adding for just c-mode files. If it's cc-mode then
just change the hook.

FWIW,
-Adam

On Mon, Mar 5, 2018 at 8:18 AM,  <stefan.puiu@gmail.com> wrote:
> Hi,
>
> I've asked this also on Emacs stackexchange (https://emacs.stackexchange.com/questions/38822/cscope-minor-mode-not-enabled-for-c-in-emacs-25), trying my luck here...
>
> I'm using Emacs 25 on Ubuntu 16.04 and all is mostly well, except that there's one difference between this version and 24 - on Emacs 24, any C/C++ file (*.c or *.cpp) I would open, cscope-minor-mode would be enabled. This isn't the case anymore on 25 (I've checked with 'C-h m'), so I have to type 'M-x cscope-minor-mode' on each new file I open, which is quite annoying. I'm using xcscope-el that ships with this version of Ubuntu (1.1-1, says dpkg output). Any idea what could be happening here? A pointer to where to start looking would be very helpful.
>
> Thanks in advance,
> Stefan.

Re: cscope-minor-mode not enabled for C in emacs 25

[stefan.puiu]

Hi,

On Monday, March 5, 2018 at 7:30:34 PM UTC+2, Adam Taylor wrote:
> I don't know why it's missing in 25, but you can add it to your c-mode
> easily enough by adding the following to your init file:
>     (add-hook 'c-mode-hook (lambda () (cscope-minor-mode 1)))
> 
> I'll assume you're adding for just c-mode files. If it's cc-mode then
> just change the hook.

Thanks, apparently adding 

(cscope-setup)

in my .emacs solved it. That particular cscope function sets up cscope with c-mode and cc-mode. Not sure why in 24 this was not necessary...