highlight lines with gud breakpoints

highlight lines with gud breakpoints

[Uwe Brauer]

Hi 

I googled around and found 
https://stackoverflow.com/questions/40071598/emacs-how-to-enable-highlighting-breakpoints-in-a-text-terminal-emacs-nw

Well I would like to hightlight gud-breakpoints also in regular
graphical emacs. I searched, look up the packages in elpa etc but found
nothing. 

Are there any plans to provide such a feature?



To put that into context: I am asking this because I am debugging matlab
files which is a bit awkward since mathworks broke some time ago an API
which allowed emacs to navigate the debugging process, this is no longer
possible but there is a sort of patch/kludge which makes it still
possible, however the breakpoint is not seen during the debugging. This
is why I am asking.

Thanks

Uwe Brauer 

Re: highlight lines with gud breakpoints

[Eli Zaretskii]

On April 10, 2019 2:01:23 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:
> 
> Hi 
> 
> I googled around and found 
> https://stackoverflow.com/questions/40071598/emacs-how-to-enable-highlighting-breakpoints-in-a-text-terminal-emacs-nw
> 
> Well I would like to hightlight gud-breakpoints also in regular
> graphical emacs. I searched, look up the packages in elpa etc but
> found
> nothing. 
> 
> Are there any plans to provide such a feature?
> 
> 
> 
> To put that into context: I am asking this because I am debugging
> matlab
> files which is a bit awkward since mathworks broke some time ago an
> API
> which allowed emacs to navigate the debugging process, this is no
> longer
> possible but there is a sort of patch/kludge which makes it still
> possible, however the breakpoint is not seen during the debugging.
> This
> is why I am asking.
> 
> Thanks
> 
> Uwe Brauer 

This is already supported: disable the left fringe, and Emacs will show breakpoints in the left display margin, as it does on text-mode terminals.

Re: highlight lines with gud breakpoints

[Uwe Brauer]

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   > On April 10, 2019 2:01:23 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:

   > This is already supported: disable the left fringe, and Emacs will
   > show breakpoints in the left display margin, as it does on text-mode
   > terminals.

Thanks, but forgive my ignorance: what do you mean by 
«disable the left fringe»?


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Re: highlight lines with gud breakpoints

[Uwe Brauer]

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   > On April 10, 2019 2:01:23 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:

   > This is already supported: disable the left fringe, and Emacs will
   > show breakpoints in the left display margin, as it does on text-mode
   > terminals.

Hm I tried out

(fringe-mode 1)
(set-fringe-mode '(0 . 0))
(set-fringe-mode '(0 . 1))

But nothing helped, gud-break does not show anything.

I am using emacs master compiled a couple of weeks ago.

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Re: highlight lines with gud breakpoints

[Eli Zaretskii]

On April 10, 2019 2:57:30 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:
> 
> > On April 10, 2019 2:01:23 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es>
> wrote:
> 
>   > This is already supported: disable the left fringe, and Emacs will
> > show breakpoints in the left display margin, as it does on text-mode
>    > terminals.
> 
> Thanks, but forgive my ignorance: what do you mean by 
> «disable the left fringe»?

M-x fringe-mode RET right-only RET

Re: highlight lines with gud breakpoints

[Eli Zaretskii]

On April 10, 2019 3:03:52 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:
> 
> > On April 10, 2019 2:01:23 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es>
> wrote:
> 
>   > This is already supported: disable the left fringe, and Emacs will
> > show breakpoints in the left display margin, as it does on text-mode
>    > terminals.
> 
> Hm I tried out
> 
> (fringe-mode 1)
> (set-fringe-mode '(0 . 0))
> (set-fringe-mode '(0 . 1))
> 
> But nothing helped, gud-break does not show anything.
> 
> I am using emacs master compiled a couple of weeks ago.

Maybe I misunderstood you: the feature you described is available with "M-x gdb".  If you mean GUD in general, then AFAIK it doesn't show breakpoints at all, so I'm confused by what exactly did you want to achieve on GUI frames.

Re: highlight lines with gud breakpoints

[Uwe Brauer]

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   > On April 10, 2019 3:03:52 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:

   > Maybe I misunderstood you: the feature you described is available with
   > "M-x gdb". If you mean GUD in general, then AFAIK it doesn't show
   > breakpoints at all, so I'm confused by what exactly did you want to
   > achieve on GUI frames.

I presume it is a misunderstanding. Matlab.el provides support for
editing matlab files, and allows to debug matlab files, via the
matlab-shell and the internal matlab debugger. That is done via gud.

So I hoped that emacs would provide for gud in general, not just for
gdb, a graphical support which would indicate where the gud-breakpoint
is set. I will try to contact the author of the relevant debugging code
in matlab.


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Re: highlight lines with gud breakpoints

[Eli Zaretskii]

On April 10, 2019 3:17:27 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:
> 
> > On April 10, 2019 3:03:52 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es>
> wrote:
> 
> > Maybe I misunderstood you: the feature you described is available
> with
>    > "M-x gdb". If you mean GUD in general, then AFAIK it doesn't show
>  > breakpoints at all, so I'm confused by what exactly did you want to
>    > achieve on GUI frames.
> 
> I presume it is a misunderstanding. Matlab.el provides support for
> editing matlab files, and allows to debug matlab files, via the
> matlab-shell and the internal matlab debugger. That is done via gud.
> 
> So I hoped that emacs would provide for gud in general, not just for
> gdb, a graphical support which would indicate where the gud-breakpoint
> is set. I will try to contact the author of the relevant debugging
> code
> in matlab.

 GUD doesn't support this, and AFAIK never did.  You will have to steal the code from gdb-mi.el to have that feature with gud.el commands.

[a kludge] (was: highlight lines with gud breakpoints)

[Uwe Brauer]

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   > On April 10, 2019 3:03:52 PM GMT+03:00, Uwe Brauer <oub@mat.ucm.es> wrote:

   > Maybe I misunderstood you: the feature you described is available with
   > "M-x gdb". If you mean GUD in general, then AFAIK it doesn't show
   > breakpoints at all, so I'm confused by what exactly did you want to
   > achieve on GUI frames.


How I found the following kludge in 

https://stackoverflow.com/questions/40071598/emacs-how-to-enable-highlighting-breakpoints-in-a-text-terminal-emacs-nw

(require 'gdb-mi)
(setq default-text-properties '(foo 1111))

(defun set_breakpt_cmds ()
  "Set Breakpoint and indicate on Editor"
  (interactive)
  (gud-break 1)
  (gdb-put-breakpoint-icon "false" (get-text-property 1 'foo)))


Problem is: how to I remove the icon 

(defun remove-breakpoint-icons ()
  (interactive)
  (move-beginning-of-line 1)
  (mark-end-of-line 1)
  (gdb-remove-breakpoint-icons  (region-beginning) (region-end)))


Sort of works, but it is a real kludge. Any comments?

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Re: [a kludge]

[Uwe Brauer]

   > How I found the following kludge in 

   > https://stackoverflow.com/questions/40071598/emacs-how-to-enable-highlighting-breakpoints-in-a-text-terminal-emacs-nw

   > (require 'gdb-mi)
   > (setq default-text-properties '(foo 1111))

   > (defun set_breakpt_cmds ()
   >   "Set Breakpoint and indicate on Editor"
   >   (interactive)
   >   (gud-break 1)
   >   (gdb-put-breakpoint-icon "false" (get-text-property 1 'foo)))


   > Problem is: how to I remove the icon 

   > (defun remove-breakpoint-icons ()
   >   (interactive)
   >   (move-beginning-of-line 1)
   >   (mark-end-of-line 1)
   >   (gdb-remove-breakpoint-icons  (region-beginning) (region-end)))

Should be 

(defun my-gud-remove-breakpoint-with-icons ()
  (interactive)
  (gud-remove 1)
  (gdb-remove-breakpoint-icons  (line-beginning-position) (line-end-position)))