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bc511a64f6
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*
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Copyright (C) 1993-1998, 2001-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* This file implements the emacs_insque and emacs_remque functions,
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clones of the insque and remque functions of BSD. They and all
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their callers have been renamed to emacs_mumble to allow us to
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include this file in the menu library on all systems. */
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#include "XMenuInt.h"
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struct qelem {
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struct qelem *q_forw;
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struct qelem *q_back;
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char q_data[1];
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};
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/* Insert ELEM into a doubly-linked list, after PREV. */
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void
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emacs_insque (void *velem, void *vprev)
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{
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struct qelem *elem = velem;
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struct qelem *prev = vprev;
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struct qelem *next = prev->q_forw;
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prev->q_forw = elem;
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if (next)
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next->q_back = elem;
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elem->q_forw = next;
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elem->q_back = prev;
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}
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/* Unlink ELEM from the doubly-linked list that it is in. */
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void
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emacs_remque (void *velem)
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{
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struct qelem *elem = velem;
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struct qelem *next = elem->q_forw;
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struct qelem *prev = elem->q_back;
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if (next)
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next->q_back = prev;
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if (prev)
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prev->q_forw = next;
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}
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