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display: do not show a "[" double-width placeholder when softwrapping 

The placeholder half-duplicates the character that is actually shown
at the beginning of the next row.  When NOT softwrapping, showing a
"[" before the ">" kind of makes sense: to avoid having a gaping gap
there.  But when softwrapping, all characters of the line will be on
the screen (except when going offscreen at the bottom), so there is
no need to show a placeholder for anything.

I imagine that when reading softwrapped Chinese or Japanese text,
things are easier to understand when no characters are shown that
are not actually in the text.

This avoids https://savannah.gnu.org/bugs/?57993.

Bug existed since version 2.8.6, commit 8490f4ac.
master
Benno Schulenberg 2020-03-15 16:38:05 +01:00
parent 01d8b0e15d
commit 2b6924ef6e
1 changed files with 0 additions and 5 deletions
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5
src/winio.c
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@ -2860,11 +2860,6 @@ int update_softwrapped_line(linestruct *line)
if (end_of_line)
break;
/* If the line is softwrapped early (because of a two-column character),
* show a "[" placeholder, unless we're softwrapping at blanks. */
if (!ISSET(AT_BLANKS) && to_col - from_col < editwincols)
mvwaddch(edit, row - 1, to_col - from_col, '[');
from_col = to_col;
}