diff options
Diffstat (limited to 'src/marker.c')
| -rw-r--r-- | src/marker.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/marker.c b/src/marker.c index a03a0b104ca..0d992c0abfa 100644 --- a/src/marker.c +++ b/src/marker.c @@ -499,11 +499,29 @@ set_marker_internal (Lisp_Object marker, Lisp_Object position, { register ptrdiff_t charpos, bytepos; - CHECK_NUMBER_COERCE_MARKER (position); - charpos = clip_to_bounds (restricted ? BUF_BEGV (b) : BUF_BEG (b), - XINT (position), - restricted ? BUF_ZV (b) : BUF_Z (b)); - bytepos = buf_charpos_to_bytepos (b, charpos); + /* Do not use CHECK_NUMBER_COERCE_MARKER because we + don't want to call buf_charpos_to_bytepos if POSTION + is a marker and so we know the bytepos already. */ + if (INTEGERP (position)) + charpos = XINT (position), bytepos = -1; + else if (MARKERP (position)) + { + charpos = XMARKER (position)->charpos; + bytepos = XMARKER (position)->bytepos; + } + else + wrong_type_argument (Qinteger_or_marker_p, position); + + charpos = clip_to_bounds + (restricted ? BUF_BEGV (b) : BUF_BEG (b), charpos, + restricted ? BUF_ZV (b) : BUF_Z (b)); + if (bytepos == -1) + bytepos = buf_charpos_to_bytepos (b, charpos); + else + bytepos = clip_to_bounds + (restricted ? BUF_BEGV_BYTE (b) : BUF_BEG_BYTE (b), + bytepos, restricted ? BUF_ZV_BYTE (b) : BUF_Z_BYTE (b)); + attach_marker (m, b, charpos, bytepos); } return marker; |