GNU bug report logs - #30139
25.3; Passing callback to align-region raises an error when using `justify` rule

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From: Eli Zaretskii <eliz <at> gnu.org>
To: johnw <at> gnu.org
Cc: 30139 <at> debbugs.gnu.org, k.michal <at> zoho.com
Subject: bug#30139: 25.3; Passing callback to align-region raises an error when using `justify` rule
Date: Mon, 19 Mar 2018 11:19:31 +0200

Ping!  Ping!

> Date: Sat, 03 Mar 2018 13:11:33 +0200
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: 30139 <at> debbugs.gnu.org, k.michal <at> zoho.com
> 
> Ping!
> 
> > Date: Sat, 24 Feb 2018 12:21:04 +0200
> > From: Eli Zaretskii <eliz <at> gnu.org>
> > Cc: 30139 <at> debbugs.gnu.org, k.michal <at> zoho.com
> > 
> > > Date: Wed, 21 Feb 2018 20:30:00 +0200
> > > From: Eli Zaretskii <eliz <at> gnu.org>
> > > Cc: 30139 <at> debbugs.gnu.org
> > > 
> > > > From: Michał Kondraciuk <k.michal <at> zoho.com>
> > > > Date: Tue, 20 Feb 2018 22:07:10 +0100
> > > > 
> > > > is there any news on the status of this bug? Should I just send the 
> > > > patch to emacs-devel?
> > > 
> > > Sorry for the delay, I will look at the patch soon.
> > 
> > John, could you please have a look at this?
> > 
> > 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 documentation:
> > 
> >  . 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)?
> > 
> >  . 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.
> > 
> >    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.
> > 
> > So patches to clarify the documentation in align.el are most welcome.
> > 
> > 
> > 
> > 
> 
> 
> 
> 

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