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view src/sysdir.h @ 5651:ae2fdb1fd9e0
Improve for-effect handling in a few places, lisp/
lisp/ChangeLog addition:
2012-05-01 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (byte-optimize-form-code-walker):
* byte-optimize.el (byte-optimize-or):
Improve handling of for-effect here; we don't need to worry about
discarding multiple values when for-effect is non-nil, this
applies to both #'prog1 and #'or.
* bytecomp.el (progn):
* bytecomp.el (byte-compile-file-form-progn): New.
Put back this function, since it's for-effect there's no need to
worry about passing back multiple values.
* cl-macs.el (cl-pop2):
* cl-macs.el (cl-do-pop):
* cl-macs.el (remf):
* cl.el (pop):
Expand to (prog1 (car-safe PLACE) (setq PLACE (cdr PLACE))) in all
these macros, since that optimizes better (especially for-effect
handling) when byte-compile-delete-errors is nil.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Tue, 01 May 2012 12:43:22 +0100 |
parents | 308d34e9f07d |
children |
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/* Copyright (C) 1995 Free Software Foundation, Inc. Copyright (C) 2000 Ben Wing. This file is part of XEmacs. XEmacs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ /* Synched up with: Not really in FSF. */ #ifndef INCLUDED_sysdir_h_ #define INCLUDED_sysdir_h_ #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #ifdef SYSV_SYSTEM_DIR # define select select_ /* Shadowing yuck */ # include <dirent.h> # undef select #elif defined (WIN32_NATIVE) # include <direct.h> # include "ndir.h" #elif defined (NONSYSTEM_DIR_LIBRARY) # include "ndir.h" #else # include <sys/dir.h> #endif /* not NONSYSTEM_DIR_LIBRARY */ #ifdef SYSV_SYSTEM_DIR # define DIRENTRY struct dirent #else /* not SYSV_SYSTEM_DIR */ # define DIRENTRY struct direct #endif /* The d_nameln member of a struct dirent includes the '\0' character on some systems, but not on others. What's worse, you can't tell at compile-time which one it will be, since it really depends on the sort of system providing the filesystem you're reading from, not the system you are running on. Paul Eggert <eggert@bi.twinsun.com> says this occurs when Emacs is running on a SunOS 4.1.2 host, reading a directory that is remote-mounted from a Solaris 2.1 host and is in a native Solaris 2.1 filesystem. (and Solaris 2 doesn't have a d_nameln member at all! Posix.1 doesn't specify it -- mrb) Since applying strlen to the name always works, we'll just do that. */ #define NAMLEN(p) strlen (p->d_name) # define DIRENTRY_NONEMPTY(p) ((p)->d_ino) /* encapsulation: directory calls */ int qxe_chdir (const Ibyte *path); int qxe_mkdir (const Ibyte *path, mode_t mode); DIR *qxe_opendir (const Ibyte *filename); DIRENTRY *qxe_readdir (DIR *dirp); int qxe_closedir (DIR *dirp); int qxe_rmdir (const Ibyte *path); Ibyte *qxe_allocating_getcwd (void); #endif /* INCLUDED_sysdir_h_ */