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14dd9101ec
Use macros like FOR_EACH_TAIL instead of maybe_quit to catch list cycles automatically instead of relying on the user becoming impatient and typing C-g (Bug#25606). * src/fns.c (Flength, Fmember, Fmemq, Fmemql, Fassq, Fassoc, Frassq) (Frassoc, Fdelete, Freverse): Use FOR_EACH_TAIL instead of maybe_quit. (Fnreverse): Use simple EQ to check for circular list instead of rarely_quit, as this suffices in this unusual case. (Fplist_put, Flax_plist_put, Flax_plist_put): Use FOR_EACH_TAIL_CONS instead of maybe_quit. (internal_equal): Use FOR_EACH_TAIL_CONS to check lists, instead of by-hand tail recursion that did not catch cycles. * src/fns.c (Fsafe_length, Fplist_get): * src/xdisp.c (display_mode_element): Use FOR_EACH_TAIL_SAFE instead of by-hand Floyd’s algorithm. * src/lisp.h (QUIT_COUNT_HEURISTIC): Remove; no longer needed. (rarely_quit): Simply count toward USHRT_MAX + 1, since the fancier versions are no longer needed. (FOR_EACH_TAIL_CONS, FOR_EACH_TAIL_SAFE) (FOR_EACH_TAIL_INTERNAL): New macros, the last with definiens mostly taken from FOR_EACH_TAIL. (FOR_EACH_TAIL): Rewrite in terms of FOR_EACH_TAIL_INTERNAL. |
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This directory contains the architecture-independent files used by or with Emacs. This includes some text files of documentation for GNU Emacs or of interest to Emacs users, and the file of dumped docstrings for Emacs functions and variables. COPYRIGHT AND LICENSE INFORMATION FOR IMAGE FILES File: emacs.icon Author: Sun Microsystems, Inc Copyright (C) 1999, 2001-2017 Free Software Foundation, Inc. License: GNU General Public License version 3 or later (see COPYING)