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* simple.el (primitive-undo): Only process marker adjustments validated against their corresponding (TEXT . POS). Issue warning for lone marker adjustments in undo history. (Bug#16818) (undo-make-selective-list): Add marker adjustments to selective undo list based on whether their corresponding (TEXT . POS) is in the region. Remove variable adjusted-markers, which was unused and only non nil during undo-make-selective-list. (undo-elt-in-region): Return nil when passed a marker adjustment and explain in function doc. Have (MARKER . ADJUSTMENT) undo records always be immediately after their corresponding (TEXT . POS) record in undo list. (Bug#16818) * lisp.h (record-delete): New arg record_markers. (record_marker_adjustment): No longer needed outside undo.c. * insdel.c (adjust_markers_for_delete): Move calculation of marker adjustments to undo.c's record_marker_adjustments. Note that fileio.c's decide_coding_unwind is another caller to adjust_markers_for_delete. Because it has undo list bound to t, it does not rely on adjust_markers_for_delete to record marker adjustments. (del_range_2): Swap call to record_delete and adjust_markers_for_delete so as undo marker adjustments are recorded before current deletion's adjustments, as before. (adjust_after_replace): (replace_range): Pass value for new record_markers arg to delete_record. * undo.c (record_marker_adjustment): Renamed to record_marker_adjustments and made static. (record_delete): Check record_markers arg and call record_marker_adjustments. (record_change): Pass value for new record_markers arg to delete_record. (record_point): at_boundary calculation no longer needs to account for marker adjustments. * undo-tests.el (undo-test-marker-adjustment-nominal): (undo-test-region-t-marker): New tests of marker adjustments. (undo-test-marker-adjustment-moved): (undo-test-region-mark-adjustment): New tests to demonstrate bug#16818, which fail without the fix. * markers.texi (Moving Marker Positions): The 2014-03-02 doc change mentioning undo's inability to handle relocated markers no longer applies. See bug#16818. * text.texi (Undo): Expand documentation of (TEXT . POS) and (MARKER . ADJUSTMENT) undo elements. |
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This directory contains files intended to test various aspects of Emacs's functionality. Please help add tests! (Also, see etc/compilation.txt for compilation mode font lock tests.)