* bug#6822: comment-padding skips first char in html-mode
@ 2010-08-07 21:35 Lennart Borgman
2010-08-08 23:37 ` Chong Yidong
2021-07-18 12:51 ` Lars Ingebrigtsen
0 siblings, 2 replies; 4+ messages in thread
From: Lennart Borgman @ 2010-08-07 21:35 UTC (permalink / raw)
To: 6822
(setq comment-padding "xy")
gives
<!-- yy --> - html-mode
Trunk 2010-08-04.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#6822: comment-padding skips first char in html-mode
2010-08-07 21:35 bug#6822: comment-padding skips first char in html-mode Lennart Borgman
@ 2010-08-08 23:37 ` Chong Yidong
2010-08-09 8:35 ` Stefan Monnier
2021-07-18 12:51 ` Lars Ingebrigtsen
1 sibling, 1 reply; 4+ messages in thread
From: Chong Yidong @ 2010-08-08 23:37 UTC (permalink / raw)
To: Stefan Monnier; +Cc: 6822
Lennart Borgman <lennart.borgman@gmail.com> writes:
> (setq comment-padding "xy")
>
> gives
>
> <!-- yy --> - html-mode
This is because of this behavior in comment-padright and
comment-padleft:
If STR already contains padding, the corresponding amount is
ignored from `comment-padding'.
I'm not sure what the reason is. Stefan?
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#6822: comment-padding skips first char in html-mode
2010-08-08 23:37 ` Chong Yidong
@ 2010-08-09 8:35 ` Stefan Monnier
0 siblings, 0 replies; 4+ messages in thread
From: Stefan Monnier @ 2010-08-09 8:35 UTC (permalink / raw)
To: Chong Yidong; +Cc: 6822
>> (setq comment-padding "xy")
>> gives
>> <!-- yy --> - html-mode
> This is because of this behavior in comment-padright and
> comment-padleft:
> If STR already contains padding, the corresponding amount is
> ignored from `comment-padding'.
> I'm not sure what the reason is. Stefan?
IIRC the issue is that comment-padding interacts with comment-start and
comment-end in otherwise unexpected ways. E.g. often "comment-start"
includes a trailing space, since this string is used as-is when you
insert a comment via comment-indent. But if you set comment-padding to
2, you usually don't want the resulting spacing to be 3 spaces when
you do comment-region.
Stefan
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#6822: comment-padding skips first char in html-mode
2010-08-07 21:35 bug#6822: comment-padding skips first char in html-mode Lennart Borgman
2010-08-08 23:37 ` Chong Yidong
@ 2021-07-18 12:51 ` Lars Ingebrigtsen
1 sibling, 0 replies; 4+ messages in thread
From: Lars Ingebrigtsen @ 2021-07-18 12:51 UTC (permalink / raw)
To: Lennart Borgman; +Cc: 6822
Lennart Borgman <lennart.borgman@gmail.com> writes:
> (setq comment-padding "xy")
>
> gives
>
> <!-- yy --> - html-mode
This should now be fixed in Emacs 28. I think the current logic of
shortening the padding when it's spaces is fine -- we're a bit sloppy
when defining comments, so they're "<!-- " in html-mode, and the padding
is " ", but we don't want extra padding in that case, so
comment-padright/left shortens it.
But if the padding isn't spaces, then it shouldn't do the shortening, so
I've made that exact change.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 4+ messages in thread
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2010-08-07 21:35 bug#6822: comment-padding skips first char in html-mode Lennart Borgman
2010-08-08 23:37 ` Chong Yidong
2010-08-09 8:35 ` Stefan Monnier
2021-07-18 12:51 ` Lars Ingebrigtsen
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