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-rw-r--r--anchor.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/anchor.c b/anchor.c
index ecb211d..bed8db2 100644
--- a/anchor.c
+++ b/anchor.c
@@ -551,7 +551,8 @@ shiftAnchorPosition(AnchorList *al, HmarkerList *hl, int line, int pos,
break;
if (a->start.pos > pos) {
a->start.pos += shift;
- if (hl && hl->marks && hl->marks[a->hseq].line == line)
+ if (hl && hl->marks &&
+ a->hseq >= 0 && hl->marks[a->hseq].line == line)
hl->marks[a->hseq].pos = a->start.pos;
}
if (a->end.pos >= pos)