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51739: detect invalid history word beginning

This commit is contained in:
Peter Stephenson 2023-05-25 15:47:23 +01:00
parent f80ad32c3f
commit 88eeade0bc
2 changed files with 10 additions and 1 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2023-05-25 Peter Stephenson <p.stephenson@samsung.com>
* 51739: Src/hist.c: detect invalid history word beginning.
2023-05-21 Oliver Kiddle <opk@zsh.org>
* 51769: Src/jobs.c, Src/utils.c: fix compilation when

7
Src/hist.c
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@ -1643,12 +1643,17 @@ hend(Eprog prog)
void
ihwbegin(int offset)
{
int pos = hptr - chline + offset;
if (stophist == 2 || (histactive & HA_INWORD) ||
(inbufflags & (INP_ALIAS|INP_HIST)) == INP_ALIAS)
return;
if (chwordpos%2)
chwordpos--; /* make sure we're on a word start, not end */
chwords[chwordpos++] = hptr - chline + offset;
DPUTS1(pos < 0, "History word position < 0 in %s",
dupstrpfx(chline, hptr-chline));
if (pos < 0)
pos = 0;
chwords[chwordpos++] = pos;
}
/* Abort current history word, not needed */