Re: [bug-gettext] msgmerge --diff-to-previous (feature request)

[Ineiev]

On 10/30/2011 07:19 AM, Alexander Potashev wrote:
> 2011/10/29 Ineiev <address@hidden>:
> > It would be considerably more convenient if the translator could see a diff
> > (in particular, wdiff) instead of just previous msgid; a prototype patch
> > is attached (another gnulib module, clean-temp, should be added to
> > libgettextpo
> > to make it build).
>
> How the behaviour of "msgmerge" will change with your patch, i.e.
> where the results of "wdiff" will be written?

When msgmerge is invoked with both --previous and --diff-to-previous,
it will insert wdiff output after previous msgids, like

#, fuzzy
#| msgid "(previous msgid)"
#| msgid_plural "(previous msgid_plural, if available)"
#| msgid_diff "(diff to previous msgid)"
#| msgid_plural_diff "(diff to previous msgid_plural)"
msgid "(current msgid)"
...

When msgmerge is invoked with just --diff-to-previous, it will insert
just diffs:

#, fuzzy
#| msgid_diff "(diff to previous msgid)"
#| msgid_plural_diff "(diff to previous msgid_plural)"
msgid "(current msgid)"
...

When there is no --diff-to-previous option, msgmerge behaves like
before the patch.

# If the diffs go into
> "previous" ("#|"-d) messages, that may be unexpected for some
> translators and software.

I thought they just would avoid --diff-to-previous; would it be better
if the diffs went into messages prefixed with "#<some-other-character>"?

> I suggest adding "diffed-to-previous" flags
> to all messages that contain wdiffs in previous msgid/msgctxts, or
> adding a per-file flag into the .po header.

I may not understand all usage scenarios, but there is
no similar "previous" flag, is it?