diff options
Diffstat (limited to 'src/syntax.c')
| -rw-r--r-- | src/syntax.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/syntax.c b/src/syntax.c index 0ee48bb3725..5e697d350ff 100644 --- a/src/syntax.c +++ b/src/syntax.c @@ -2859,10 +2859,13 @@ scan_lists (EMACS_INT from, EMACS_INT count, EMACS_INT depth, bool sexpflag) case Smath: if (!sexpflag) break; - temp_pos = dec_bytepos (from_byte); - UPDATE_SYNTAX_TABLE_BACKWARD (from - 1); - if (from != stop && c == FETCH_CHAR_AS_MULTIBYTE (temp_pos)) - DEC_BOTH (from, from_byte); + if (from > BEGV) + { + temp_pos = dec_bytepos (from_byte); + UPDATE_SYNTAX_TABLE_BACKWARD (from - 1); + if (from != stop && c == FETCH_CHAR_AS_MULTIBYTE (temp_pos)) + DEC_BOTH (from, from_byte); + } if (mathexit) { mathexit = 0; |