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-rw-r--r--src/blocks.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/blocks.c b/src/blocks.c
index 53d0251..20ea579 100644
--- a/src/blocks.c
+++ b/src/blocks.c
@@ -587,7 +587,7 @@ static void S_advance_offset(cmark_parser *parser, cmark_chunk *input,
while (count > 0 && (c = peek_at(input, parser->offset))) {
if (c == '\t') {
chars_to_tab = TAB_STOP - (parser->column % TAB_STOP);
- parser->partially_consumed_tab = chars_to_tab > count;
+ parser->partially_consumed_tab = columns && chars_to_tab > count;
chars_to_advance = parser->partially_consumed_tab ? count : chars_to_tab;
parser->column += chars_to_advance;
parser->offset += parser->partially_consumed_tab ? 0 : 1;