bug#49632: [PATCH] Ensure that M-x gdb populates gud-repeat-map

[Brian Leung]

> There is one thing that I don't understand: is the
> helper function gud-set-repeat-map-property really needed?
> 
> If e.g. the defvar gud-gdb-repeat-map uses such symbols as 'gud-next',
> could it put the 'repeat-map' property on the same symbols
> with reference to the variable 'map' directly in these defvars?
> Then only defvars will be needed, and no changes in gud-gdb, gdb.

If we assign the repeat-map property within the defvars and avoid doing so in 
the M-x gdb commands, then after gud.el gets loaded, the repeat-map property on 
(say) gud-next will be 'jdb, since jdb-repeat-map is the last such 
foo-repeat-map defvar appearing in gud.el. In that case, calling M-x perldb and 
then running gud-next when repeat-mode is on will bring up the jdb-repeat-map, 
which contains some commands that aren't defined for perldb. So I think the 
gud-set-repeat-map-property macro (or something like it) is necessary.

> ----------------------------------------
> From: Juri Linkov <juri@linkov.net>
> Sent: Sun Jul 25 22:53:31 CEST 2021
> To: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Brian Leung <leungbk@mailfence.com>, <49632@debbugs.gnu.org>
> Subject: Re: bug#49632: [PATCH] Ensure that M-x gdb populates gud-repeat-map
> 
> 
> >> OK, I've updated the patch following Juri's suggestions.
> >
> > Skimming the patch, it looks good to me.  Juri, do you have any
> > comments?
> 
> There is one thing that I don't understand: is the
> helper function gud-set-repeat-map-property really needed?
> 
> If e.g. the defvar gud-gdb-repeat-map uses such symbols as 'gud-next',
> could it put the 'repeat-map' property on the same symbols
> with reference to the variable 'map' directly in these defvars?
> Then only defvars will be needed, and no changes in gud-gdb, gdb.


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