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bug#24172: 25.1; Doc of parse-sexp-ignore-comments: what does a value of
From: |
Lars Ingebrigtsen |
Subject: |
bug#24172: 25.1; Doc of parse-sexp-ignore-comments: what does a value of nil mean? |
Date: |
Sat, 27 Jul 2019 17:21:42 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Michael Heerdegen <michael_heerdegen@web.de> writes:
> in the docstring of `parse-sexp-ignore-comments' (or at least in the
> manual), I miss a description about what a value of nil exactly means:
> How are comments treated then? Are they treated as separate units that
> can then be parsed as well, but separately from code, or are they treated
> as indistinguishable from code?
>
> For example, if parsing starts from within a comment, and parsing finds
> the end of the comment and is not yet finished, is parsing just
> continued inside the following code, or does it fail?
After doing some testing, it seems that if it's nil, the commands
affected by the setting just treat the commented-out text as if it
wasn't commented out.
So the answer to your last question seems to be "yes".
;; (foo
(bar zot))
However, pretty much the same thing happens with a non-nil value, too --
with point before (foo C-M-f will advance past zot)).
So it doesn't treat comments as whitespace, really -- it only does that
if point is outside (before, at the end of a line, etc) the comment to
begin with. Seems like you could write an essay about it, but perhaps
it's not worth listing the eccentricities here which I guess could change.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#24172: 25.1; Doc of parse-sexp-ignore-comments: what does a value of nil mean?,
Lars Ingebrigtsen <=