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bug#30139: 25.3; Passing callback to align-region raises an error when u
bug#30139: 25.3; Passing callback to align-region raises an error when using `justify` rule
Mon, 19 Mar 2018 17:43:07 -0700
Gnus/5.13 (Gnus v5.13) Emacs/26.0.91 (darwin)
>>>>> "EZ" == Eli Zaretskii <address@hidden> writes:
> Btw, I find the documentation in align.el hard to understand. It sounds like
> a very powerful feature, but I would have difficulties using it, with the
> doc strings as my only guidance. Some examples of unclear or confusing
> . align-region-separate has this to describe the 'group' method:
> Each contiguous set of lines where a specific alignment occurs is
> considered a section for that alignment rule.
> What is a "contiguous set of lines"? Does it mean non-empty lines,
> i.e. that groups are separated by empty lines (that's what the
> example seems to imply)?
It refers to this:
That is, groups of lines separated by at least one blank line.
> . align-rules-list has this to describe the 'group' attribute:
> [...] For alignment rules, these are the characters that will be
> deleted/expanded for the purposes of alignment. The "alignment
> character" is always the first character immediately following
> this parenthesis group. This attribute may also be a list of
> integers, in which case multiple alignment characters will be
> aligned, with the list of integers identifying the whitespace
> groups which precede them. The default for this attribute is 1.
This refers to regexp groups. So if the align regexp were:
Then regexp group 1 is the text that align should feel free to delete, or fill
with spaces, in order to line up all the equal signs.
> Which "this parenthesis group" is being alluded to here? Also, it
> leaves unexplained how characters are specified by integers, and
> the meaning of the default value of 1 is thus unclear.
It just means that the default is to use the first regexp quote in the
> So patches to clarify the documentation in align.el are most welcome.
Not sure when I'll have time to do this, but I'll add it to my list.
John Wiegley GPG fingerprint = 4710 CF98 AF9B 327B B80F
http://newartisans.com 60E1 46C4 BD1A 7AC1 4BA2