Ar an fichiú lá de mí na Nollaig, scríobh Stephen J. Turnbull: Markers and extents are always at character boundaries, they never point to the middle of an Ichar’s Ibyte representation. If you mean rather that they overlap the boundaries of the region to be changed, preserving them when encoding or decoding needs to be handled within insdel.c. It is within that file, especially within buffer_delete_range(), that the decision to delete any extents and to adjust any markers is made. There should be an analogous buffer_replace_range (). I note that GNU have had a replace_range() since 1997, and while it wasn’t obvious then that it was necessary, I think it is. As it is, it aborts if you turn on ERROR_CHECK_TEXT, character_tell() gives the wrong answer if the stream is rewound, it’s not implemented for a lot of coding systems where its implementation would be trivial -- ‘Liston operated so fast that he once accidentally amputated an assistant’s fingers along with a patient’s leg, […] The patient and the assistant both died of sepsis, and a spectator reportedly died of shock, resulting in the only known procedure with a 300% mortality.’ (Atul Gawande, NEJM, 2012) _______________________________________________ XEmacs-Patches mailing list XEmacs-Patches(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-patches