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less: correctly account for tabs when rewrapping lines 

Lines are rewrapped when the terminal width changes or line numbers
are enabled/disabled.  The current calculation always adds eight to
the line length for a tab whereas it should only add enough to move
to the next tab stop.

This doesn't affect the display of lines, which is handled elsewhere
and gets tab stops right, but it does cause lines to be wrapped at
the wrong position.

Signed-off-by:  Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Ron Yorston 2015-07-19 21:41:09 +01:00 committed by Denys Vlasenko
parent f06386ad4f
commit 78cfa00154
1 changed files with 3 additions and 1 deletions
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4
miscutils/less.c
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@ -331,8 +331,10 @@ static void re_wrap(void)
*d = *s;
if (*d != '\0') {
new_line_pos++;
if (*d == '\t') /* tab */
if (*d == '\t') { /* tab */
new_line_pos += 7;
new_line_pos &= (~7);
}
s++;
d++;
if (new_line_pos >= w) {