"Stephen J. Turnbull" <stephen(a)xemacs.org&gt; writes: Alternatively, do a cleanroom implementation from a description. Update to upstream once XEmacs has moved to GPLv3(+). Here is a description: match-substitute-replacement does a replacement and returns only the replacement of the matched part (see replace-match for details about the arguments). It does this by getting the substring or buffer-substring corresponding to the subexp match, getting the match-data as integers (never as markers), adjusting the match-data to correspond to the positions in the substring rather than the original, and then executing replace-match on the substring. Those parts of the match-data pointing into the wild regarding the substring (before its beginning or after its end) are not used in the replace-match, so you'll get away without triggering errors. Be sure to cater for the case where the buffer itself is an element of the match-data: adding an offset to it will not do. The whole is wrapped in an outer save-match-data in order not to leave the rather haphazard matchdata reinterpretaion around. -- David Kastrup _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://calypso.tux.org/mailman/listinfo/xemacs-beta