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justify: trim prefixed whitespace when justifying a marked region 

This fixes https://savannah.gnu.org/bugs/?56307.

Bug existed since version 4.0, when the justifying
of a marked region was introduced.
master
Benno Schulenberg 2020-03-08 16:10:33 +01:00
parent a16315a65f
commit c934c1d71b
1 changed files with 15 additions and 0 deletions
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15
src/text.c
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@ -1763,6 +1763,21 @@ void do_justify(bool full_justify)
return;
}
/* Recede over any preceding whitespace. This effectively snips
* trailing blanks from what will become the preceding paragraph. */
while (start_x > 0 && is_blank_mbchar(&startline->data[start_x - 1]))
start_x--;
/* Advance over any subsequent whitespace. */
while (is_blank_mbchar(&endline->data[end_x]))
end_x++;
/* Include preceding and subsequent whitespace into the marked region. */
openfile->mark = startline;
openfile->mark_x = start_x;
openfile->current = endline;
openfile->current_x = end_x;
par_len = endline->lineno - startline->lineno + (end_x > 0 ? 1 : 0);
/* Remember whether the end of the region was before the end-of-line. */