Mercurial > hg > xemacs-beta
annotate src/dired.c @ 5314:596011a8bf8f
= < > <= >=: it's OK to use the compiler macro when first, last args side effect
2010-12-29 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (= < > <= >=):
For these functions' compiler macros, the optimisation is safe
even if the first and the last arguments have side effects, since
they're only used the once.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Wed, 29 Dec 2010 23:47:30 +0000 |
| parents | cdca98f2d36f |
| children | 94bbd4792049 2aa9cd456ae7 |
| rev | line source |
|---|---|
| 428 | 1 /* Lisp functions for making directory listings. |
| 2 Copyright (C) 1985, 1986, 1992, 1993, 1994 Free Software Foundation, Inc. | |
| 826 | 3 Copyright (C) 2001, 2002 Ben Wing. |
| 428 | 4 |
| 5 This file is part of XEmacs. | |
| 6 | |
| 7 XEmacs is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2, or (at your option) any | |
| 10 later version. | |
| 11 | |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with XEmacs; see the file COPYING. If not, write to | |
| 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 Boston, MA 02111-1307, USA. */ | |
| 21 | |
| 22 /* Synched up with: FSF 19.30. */ | |
| 23 | |
| 24 #include <config.h> | |
| 25 #include "lisp.h" | |
| 26 | |
| 27 #include "buffer.h" | |
| 28 #include "commands.h" | |
| 29 #include "elhash.h" | |
| 800 | 30 #include "opaque.h" |
| 428 | 31 #include "regex.h" |
| 460 | 32 #include "syntax.h" |
| 800 | 33 #include "sysdep.h" |
| 34 | |
| 35 #include "sysdir.h" | |
| 36 #include "sysfile.h" | |
| 37 #include "syspwd.h" | |
| 38 #include "systime.h" | |
| 428 | 39 |
| 528 | 40 #ifdef WIN32_NATIVE |
| 41 #include "syswindows.h" | |
| 42 #endif | |
| 43 | |
| 428 | 44 Lisp_Object Vcompletion_ignored_extensions; |
| 45 Lisp_Object Qdirectory_files; | |
| 46 Lisp_Object Qfile_name_completion; | |
| 47 Lisp_Object Qfile_name_all_completions; | |
| 48 Lisp_Object Qfile_attributes; | |
|
5211
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Move `default-file-system-ignore-case' to C; fix bug in directory hash tables
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
49 Lisp_Object Qfile_system_ignore_case_p; |
| 428 | 50 |
| 51 static Lisp_Object | |
| 52 close_directory_unwind (Lisp_Object unwind_obj) | |
| 53 { | |
| 54 DIR *d = (DIR *)get_opaque_ptr (unwind_obj); | |
| 771 | 55 qxe_closedir (d); |
| 428 | 56 free_opaque_ptr (unwind_obj); |
| 57 return Qnil; | |
| 58 } | |
| 59 | |
| 60 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /* | |
| 61 Return a list of names of files in DIRECTORY. | |
| 62 There are four optional arguments: | |
| 63 If FULL is non-nil, absolute pathnames of the files are returned. | |
| 2297 | 64 If MATCH is non-nil, only pathnames whose basename contain that regexp are |
| 65 returned. | |
| 428 | 66 If NOSORT is non-nil, the list is not sorted--its order is unpredictable. |
| 67 NOSORT is useful if you plan to sort the result yourself. | |
| 68 If FILES-ONLY is the symbol t, then only the "files" in the directory | |
| 69 will be returned; subdirectories will be excluded. If FILES-ONLY is not | |
| 70 nil and not t, then only the subdirectories will be returned. Otherwise, | |
| 71 if FILES-ONLY is nil (the default) then both files and subdirectories will | |
| 72 be returned. | |
| 73 */ | |
| 74 (directory, full, match, nosort, files_only)) | |
| 75 { | |
| 76 /* This function can GC */ | |
| 77 DIR *d; | |
| 78 Lisp_Object list = Qnil; | |
| 79 Bytecount directorylen; | |
| 80 Lisp_Object handler; | |
| 81 struct re_pattern_buffer *bufp = NULL; | |
| 82 int speccount = specpdl_depth (); | |
| 867 | 83 Ibyte *statbuf, *statbuf_tail; |
| 428 | 84 |
| 85 struct gcpro gcpro1, gcpro2; | |
| 86 GCPRO2 (directory, list); | |
| 87 | |
| 88 /* If the file name has special constructs in it, | |
| 89 call the corresponding file handler. */ | |
| 90 handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
| 91 if (!NILP (handler)) | |
| 92 { | |
| 93 UNGCPRO; | |
| 94 if (!NILP (files_only)) | |
| 95 return call6 (handler, Qdirectory_files, directory, full, match, | |
| 96 nosort, files_only); | |
| 97 else | |
| 98 return call5 (handler, Qdirectory_files, directory, full, match, | |
| 99 nosort); | |
| 100 } | |
| 101 | |
| 102 /* #### why do we do Fexpand_file_name after file handlers here, | |
| 103 but earlier everywhere else? */ | |
| 104 directory = Fexpand_file_name (directory, Qnil); | |
| 105 directory = Ffile_name_as_directory (directory); | |
| 106 directorylen = XSTRING_LENGTH (directory); | |
| 107 | |
| 2367 | 108 statbuf = alloca_ibytes (directorylen + MAXNAMLEN + 1); |
| 428 | 109 memcpy (statbuf, XSTRING_DATA (directory), directorylen); |
| 110 statbuf_tail = statbuf + directorylen; | |
| 111 | |
| 112 /* XEmacs: this should come after Ffile_name_as_directory() to avoid | |
| 113 potential regexp cache smashage. It comes before the opendir() | |
| 114 because it might signal an error. */ | |
| 115 if (!NILP (match)) | |
| 116 { | |
| 117 CHECK_STRING (match); | |
| 118 | |
| 119 /* MATCH might be a flawed regular expression. Rather than | |
| 120 catching and signalling our own errors, we just call | |
| 121 compile_pattern to do the work for us. */ | |
| 826 | 122 bufp = compile_pattern (match, 0, Qnil, Qnil, 0, 0, ERROR_ME); |
| 428 | 123 } |
| 124 | |
| 125 /* Now *bufp is the compiled form of MATCH; don't call anything | |
| 126 which might compile a new regexp until we're done with the loop! */ | |
| 127 | |
| 128 /* Do this opendir after anything which might signal an error. | |
| 129 NOTE: the above comment is old; previously, there was no | |
| 130 unwind-protection in case of error, but now there is. */ | |
| 771 | 131 d = qxe_opendir (XSTRING_DATA (directory)); |
| 428 | 132 if (!d) |
| 563 | 133 report_file_error ("Opening directory", directory); |
| 428 | 134 |
| 135 record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d)); | |
| 136 | |
| 137 /* Loop reading blocks */ | |
| 138 while (1) | |
| 139 { | |
| 771 | 140 DIRENTRY *dp = qxe_readdir (d); |
| 428 | 141 int len; |
| 826 | 142 struct syntax_cache scache_struct; |
| 143 struct syntax_cache *scache = &scache_struct; | |
| 428 | 144 |
| 145 if (!dp) | |
| 146 break; | |
| 147 len = NAMLEN (dp); | |
| 148 if (DIRENTRY_NONEMPTY (dp) | |
| 149 && (NILP (match) | |
| 826 | 150 || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0, Qnil, 0, |
| 151 scache)))) | |
| 428 | 152 { |
| 153 if (!NILP (files_only)) | |
| 154 { | |
| 155 struct stat st; | |
| 156 int dir_p = 0; | |
| 157 | |
| 158 memcpy (statbuf_tail, dp->d_name, len); | |
| 159 statbuf_tail[len] = 0; | |
| 160 | |
| 771 | 161 if (qxe_stat (statbuf, &st) == 0 |
| 428 | 162 && (st.st_mode & S_IFMT) == S_IFDIR) |
| 163 dir_p = 1; | |
| 164 | |
| 165 if (EQ (files_only, Qt) && dir_p) | |
| 166 continue; | |
| 167 else if (!EQ (files_only, Qt) && !dir_p) | |
| 168 continue; | |
| 169 } | |
| 170 | |
| 171 { | |
| 172 Lisp_Object name = | |
| 867 | 173 make_string ((Ibyte *)dp->d_name, len); |
| 428 | 174 if (!NILP (full)) |
| 175 name = concat2 (directory, name); | |
| 176 | |
| 177 list = Fcons (name, list); | |
| 178 } | |
| 179 } | |
| 180 } | |
| 771 | 181 unbind_to (speccount); /* This will close the dir */ |
| 428 | 182 |
| 183 if (NILP (nosort)) | |
|
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Move #'sort*, #'fill, #'merge to C from cl-seq.el.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5089
diff
changeset
|
184 list = list_sort (Fnreverse (list), NULL, Qstring_lessp, Qidentity); |
| 428 | 185 |
| 186 RETURN_UNGCPRO (list); | |
| 187 } | |
| 188 | |
| 189 static Lisp_Object file_name_completion (Lisp_Object file, | |
| 190 Lisp_Object directory, | |
| 191 int all_flag, int ver_flag); | |
| 192 | |
| 193 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /* | |
| 444 | 194 Complete file name PARTIAL-FILENAME in directory DIRECTORY. |
| 195 Return the longest prefix common to all file names in DIRECTORY | |
| 196 that start with PARTIAL-FILENAME. | |
| 197 If there is only one and PARTIAL-FILENAME matches it exactly, return t. | |
| 198 Return nil if DIRECTORY contains no name starting with PARTIAL-FILENAME. | |
| 428 | 199 |
| 444 | 200 File names which end with any member of `completion-ignored-extensions' |
| 201 are not considered as possible completions for PARTIAL-FILENAME unless | |
| 202 there is no other possible completion. `completion-ignored-extensions' | |
| 203 is not applied to the names of directories. | |
| 428 | 204 */ |
| 444 | 205 (partial_filename, directory)) |
| 428 | 206 { |
| 207 /* This function can GC. GC checked 1996.04.06. */ | |
| 208 Lisp_Object handler; | |
| 209 | |
| 210 /* If the directory name has special constructs in it, | |
| 211 call the corresponding file handler. */ | |
| 212 handler = Ffind_file_name_handler (directory, Qfile_name_completion); | |
| 213 if (!NILP (handler)) | |
| 444 | 214 return call3 (handler, Qfile_name_completion, partial_filename, directory); |
| 428 | 215 |
| 216 /* If the file name has special constructs in it, | |
| 217 call the corresponding file handler. */ | |
| 444 | 218 handler = Ffind_file_name_handler (partial_filename, Qfile_name_completion); |
| 428 | 219 if (!NILP (handler)) |
| 444 | 220 return call3 (handler, Qfile_name_completion, partial_filename, directory); |
| 428 | 221 |
| 444 | 222 return file_name_completion (partial_filename, directory, 0, 0); |
| 428 | 223 } |
| 224 | |
| 225 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /* | |
| 444 | 226 Return a list of all completions of PARTIAL-FILENAME in DIRECTORY. |
| 227 These are all file names in DIRECTORY which begin with PARTIAL-FILENAME. | |
| 428 | 228 */ |
| 444 | 229 (partial_filename, directory)) |
| 428 | 230 { |
| 231 /* This function can GC. GC checked 1997.06.04. */ | |
| 232 Lisp_Object handler; | |
| 233 struct gcpro gcpro1; | |
| 234 | |
| 235 GCPRO1 (directory); | |
| 236 directory = Fexpand_file_name (directory, Qnil); | |
| 237 /* If the file name has special constructs in it, | |
| 238 call the corresponding file handler. */ | |
| 239 handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); | |
| 240 UNGCPRO; | |
| 241 if (!NILP (handler)) | |
| 444 | 242 return call3 (handler, Qfile_name_all_completions, partial_filename, |
| 428 | 243 directory); |
| 244 | |
| 444 | 245 return file_name_completion (partial_filename, directory, 1, 0); |
| 428 | 246 } |
| 247 | |
| 248 static int | |
| 249 file_name_completion_stat (Lisp_Object directory, DIRENTRY *dp, | |
| 250 struct stat *st_addr) | |
| 251 { | |
| 252 Bytecount len = NAMLEN (dp); | |
| 253 Bytecount pos = XSTRING_LENGTH (directory); | |
| 254 int value; | |
| 2367 | 255 Ibyte *fullname = alloca_ibytes (len + pos + 2); |
| 428 | 256 |
| 257 memcpy (fullname, XSTRING_DATA (directory), pos); | |
| 258 if (!IS_DIRECTORY_SEP (fullname[pos - 1])) | |
| 259 fullname[pos++] = DIRECTORY_SEP; | |
| 260 | |
| 261 memcpy (fullname + pos, dp->d_name, len); | |
| 262 fullname[pos + len] = 0; | |
| 263 | |
| 264 #ifdef S_IFLNK | |
| 265 /* We want to return success if a link points to a nonexistent file, | |
| 266 but we want to return the status for what the link points to, | |
| 267 in case it is a directory. */ | |
| 771 | 268 value = qxe_lstat (fullname, st_addr); |
| 428 | 269 if (S_ISLNK (st_addr->st_mode)) |
| 771 | 270 qxe_stat (fullname, st_addr); |
| 428 | 271 #else |
| 771 | 272 value = qxe_stat (fullname, st_addr); |
| 428 | 273 #endif |
| 274 return value; | |
| 275 } | |
| 276 | |
| 277 static Lisp_Object | |
| 278 file_name_completion_unwind (Lisp_Object locative) | |
| 279 { | |
| 280 DIR *d; | |
| 281 Lisp_Object obj = XCAR (locative); | |
| 282 | |
| 283 if (!NILP (obj)) | |
| 284 { | |
| 285 d = (DIR *)get_opaque_ptr (obj); | |
| 771 | 286 qxe_closedir (d); |
| 428 | 287 free_opaque_ptr (obj); |
| 288 } | |
| 853 | 289 free_cons (locative); |
| 428 | 290 return Qnil; |
| 291 } | |
| 292 | |
| 293 static Lisp_Object | |
| 294 file_name_completion (Lisp_Object file, Lisp_Object directory, int all_flag, | |
| 2286 | 295 int UNUSED (ver_flag)) |
| 428 | 296 { |
| 297 /* This function can GC */ | |
| 298 DIR *d = 0; | |
| 299 int matchcount = 0; | |
| 300 Lisp_Object bestmatch = Qnil; | |
| 301 Charcount bestmatchsize = 0; | |
| 302 struct stat st; | |
| 303 int passcount; | |
| 304 int speccount = specpdl_depth (); | |
| 305 Charcount file_name_length; | |
| 306 Lisp_Object locative; | |
| 307 struct gcpro gcpro1, gcpro2, gcpro3; | |
| 308 | |
| 309 GCPRO3 (file, directory, bestmatch); | |
| 310 | |
| 311 CHECK_STRING (file); | |
| 312 | |
| 442 | 313 #ifdef WIN32_NATIVE |
| 428 | 314 /* Filename completion on Windows ignores case, since Windows |
| 315 filesystems do. */ | |
| 316 specbind (Qcompletion_ignore_case, Qt); | |
| 442 | 317 #endif /* WIN32_NATIVE */ |
| 428 | 318 |
| 319 #ifdef FILE_SYSTEM_CASE | |
| 320 file = FILE_SYSTEM_CASE (file); | |
| 321 #endif | |
| 322 directory = Fexpand_file_name (directory, Qnil); | |
| 826 | 323 file_name_length = string_char_length (file); |
| 428 | 324 |
| 325 /* With passcount = 0, ignore files that end in an ignored extension. | |
| 326 If nothing found then try again with passcount = 1, don't ignore them. | |
| 327 If looking for all completions, start with passcount = 1, | |
| 328 so always take even the ignored ones. | |
| 329 | |
| 330 ** It would not actually be helpful to the user to ignore any possible | |
| 331 completions when making a list of them.** */ | |
| 332 | |
| 333 /* We cannot use close_directory_unwind() because we change the | |
| 334 directory. The old code used to just avoid signaling errors, and | |
| 335 call closedir, but it was wrong, because it made sane handling of | |
| 336 QUIT impossible and, besides, various utility functions like | |
| 337 regexp_ignore_completion_p can signal errors. */ | |
| 338 locative = noseeum_cons (Qnil, Qnil); | |
| 339 record_unwind_protect (file_name_completion_unwind, locative); | |
| 340 | |
| 341 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) | |
| 342 { | |
| 771 | 343 d = qxe_opendir (XSTRING_DATA (Fdirectory_file_name (directory))); |
| 428 | 344 if (!d) |
| 563 | 345 report_file_error ("Opening directory", directory); |
| 428 | 346 XCAR (locative) = make_opaque_ptr ((void *)d); |
| 347 | |
| 348 /* Loop reading blocks */ | |
| 349 while (1) | |
| 350 { | |
| 351 DIRENTRY *dp; | |
| 352 Bytecount len; | |
| 353 /* scmp() works in characters, not bytes, so we have to compute | |
| 354 this value: */ | |
| 355 Charcount cclen; | |
| 356 int directoryp; | |
| 357 int ignored_extension_p = 0; | |
| 867 | 358 Ibyte *d_name; |
| 428 | 359 |
| 771 | 360 dp = qxe_readdir (d); |
| 428 | 361 if (!dp) break; |
| 362 | |
| 867 | 363 /* Cast to Ibyte* is OK, as qxe_readdir() Mule-encapsulates. */ |
| 364 d_name = (Ibyte *) dp->d_name; | |
| 428 | 365 len = NAMLEN (dp); |
| 366 cclen = bytecount_to_charcount (d_name, len); | |
| 367 | |
| 368 QUIT; | |
| 369 | |
| 370 if (! DIRENTRY_NONEMPTY (dp) | |
| 371 || cclen < file_name_length | |
| 372 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length)) | |
| 373 continue; | |
| 374 | |
|
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Ignore file-too-large conditions when stat()ing a file for dired. The size
Jerry James <james@xemacs.org>
parents:
4406
diff
changeset
|
375 /* Ignore file-too-large conditions; the mode is still filled in. */ |
|
53071486ff7a
Ignore file-too-large conditions when stat()ing a file for dired. The size
Jerry James <james@xemacs.org>
parents:
4406
diff
changeset
|
376 if (file_name_completion_stat (directory, dp, &st) < 0 && |
|
53071486ff7a
Ignore file-too-large conditions when stat()ing a file for dired. The size
Jerry James <james@xemacs.org>
parents:
4406
diff
changeset
|
377 errno != EOVERFLOW) |
|
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Ignore file-too-large conditions when stat()ing a file for dired. The size
Jerry James <james@xemacs.org>
parents:
4406
diff
changeset
|
378 continue; |
| 428 | 379 |
| 380 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
| 381 if (directoryp) | |
| 382 { | |
| 383 #ifndef TRIVIAL_DIRECTORY_ENTRY | |
| 384 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
| 385 #endif | |
| 386 /* "." and ".." are never interesting as completions, but are | |
| 387 actually in the way in a directory containing only one file. */ | |
| 388 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
| 389 continue; | |
| 390 } | |
| 391 else | |
| 392 { | |
| 393 /* Compare extensions-to-be-ignored against end of this file name */ | |
| 394 /* if name is not an exact match against specified string. */ | |
| 395 if (!passcount && cclen > file_name_length) | |
| 396 { | |
| 397 /* and exit this for loop if a match is found */ | |
| 2367 | 398 EXTERNAL_LIST_LOOP_2 (elt, Vcompletion_ignored_extensions) |
| 428 | 399 { |
| 400 Charcount skip; | |
| 401 | |
| 402 CHECK_STRING (elt); | |
| 403 | |
| 826 | 404 skip = cclen - string_char_length (elt); |
| 428 | 405 if (skip < 0) continue; |
| 406 | |
| 867 | 407 if (0 > scmp (itext_n_addr (d_name, skip), |
| 428 | 408 XSTRING_DATA (elt), |
| 826 | 409 string_char_length (elt))) |
| 428 | 410 { |
| 411 ignored_extension_p = 1; | |
| 412 break; | |
| 413 } | |
| 414 } | |
| 415 } | |
| 416 } | |
| 417 | |
| 418 /* If an ignored-extensions match was found, | |
| 419 don't process this name as a completion. */ | |
| 420 if (!passcount && ignored_extension_p) | |
| 421 continue; | |
| 422 | |
| 814 | 423 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, len)) |
| 428 | 424 continue; |
| 425 | |
| 426 /* Update computation of how much all possible completions match */ | |
| 427 matchcount++; | |
| 428 | |
| 429 if (all_flag || NILP (bestmatch)) | |
| 430 { | |
| 431 Lisp_Object name = Qnil; | |
| 432 struct gcpro ngcpro1; | |
| 433 NGCPRO1 (name); | |
| 434 /* This is a possible completion */ | |
| 435 name = make_string (d_name, len); | |
| 436 if (directoryp) /* Completion is a directory; end it with '/' */ | |
| 437 name = Ffile_name_as_directory (name); | |
| 438 if (all_flag) | |
| 439 { | |
| 440 bestmatch = Fcons (name, bestmatch); | |
| 441 } | |
| 442 else | |
| 443 { | |
| 444 bestmatch = name; | |
| 826 | 445 bestmatchsize = string_char_length (name); |
| 428 | 446 } |
| 447 NUNGCPRO; | |
| 448 } | |
| 449 else | |
| 450 { | |
| 451 Charcount compare = min (bestmatchsize, cclen); | |
| 867 | 452 Ibyte *p1 = XSTRING_DATA (bestmatch); |
| 453 Ibyte *p2 = d_name; | |
| 428 | 454 Charcount matchsize = scmp (p1, p2, compare); |
| 455 | |
| 456 if (matchsize < 0) | |
| 457 matchsize = compare; | |
| 458 if (completion_ignore_case) | |
| 459 { | |
| 460 /* If this is an exact match except for case, | |
| 461 use it as the best match rather than one that is not | |
| 462 an exact match. This way, we get the case pattern | |
| 463 of the actual match. */ | |
| 464 if ((matchsize == cclen | |
| 465 && matchsize + !!directoryp | |
| 826 | 466 < string_char_length (bestmatch)) |
| 428 | 467 || |
| 468 /* If there is no exact match ignoring case, | |
| 469 prefer a match that does not change the case | |
| 470 of the input. */ | |
| 471 (((matchsize == cclen) | |
| 472 == | |
| 473 (matchsize + !!directoryp | |
| 826 | 474 == string_char_length (bestmatch))) |
| 428 | 475 /* If there is more than one exact match aside from |
| 476 case, and one of them is exact including case, | |
| 477 prefer that one. */ | |
| 478 && 0 > scmp_1 (p2, XSTRING_DATA (file), | |
| 479 file_name_length, 0) | |
| 480 && 0 <= scmp_1 (p1, XSTRING_DATA (file), | |
| 481 file_name_length, 0))) | |
| 482 { | |
| 483 bestmatch = make_string (d_name, len); | |
| 484 if (directoryp) | |
| 485 bestmatch = Ffile_name_as_directory (bestmatch); | |
| 486 } | |
| 487 } | |
| 488 | |
| 489 /* If this directory all matches, | |
| 490 see if implicit following slash does too. */ | |
| 491 if (directoryp | |
| 492 && compare == matchsize | |
| 493 && bestmatchsize > matchsize | |
| 867 | 494 && IS_ANY_SEP (itext_ichar_n (p1, matchsize))) |
| 428 | 495 matchsize++; |
| 496 bestmatchsize = matchsize; | |
| 497 } | |
| 498 } | |
| 771 | 499 qxe_closedir (d); |
| 428 | 500 free_opaque_ptr (XCAR (locative)); |
| 501 XCAR (locative) = Qnil; | |
| 502 } | |
| 503 | |
| 771 | 504 unbind_to (speccount); |
| 428 | 505 |
| 506 UNGCPRO; | |
| 507 | |
| 508 if (all_flag || NILP (bestmatch)) | |
| 509 return bestmatch; | |
| 510 if (matchcount == 1 && bestmatchsize == file_name_length) | |
| 511 return Qt; | |
|
5089
99f8ebc082d9
Make #'substring an alias of #'subseq; give the latter the byte code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4976
diff
changeset
|
512 return Fsubseq (bestmatch, Qzero, make_int (bestmatchsize)); |
| 428 | 513 } |
| 514 | |
| 515 | |
| 516 static Lisp_Object user_name_completion (Lisp_Object user, | |
| 517 int all_flag, | |
| 518 int *uniq); | |
| 519 | |
| 520 DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /* | |
| 444 | 521 Complete user name from PARTIAL-USERNAME. |
| 522 Return the longest prefix common to all user names starting with | |
| 523 PARTIAL-USERNAME. If there is only one and PARTIAL-USERNAME matches | |
| 524 it exactly, returns t. Return nil if there is no user name starting | |
| 525 with PARTIAL-USERNAME. | |
| 428 | 526 */ |
| 444 | 527 (partial_username)) |
| 428 | 528 { |
| 444 | 529 return user_name_completion (partial_username, 0, NULL); |
| 428 | 530 } |
| 531 | |
| 532 DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /* | |
| 444 | 533 Complete user name from PARTIAL-USERNAME. |
| 428 | 534 |
| 535 This function is identical to `user-name-completion', except that | |
| 536 the cons of the completion and an indication of whether the | |
| 537 completion was unique is returned. | |
| 538 | |
| 444 | 539 The car of the returned value is the longest prefix common to all user |
| 540 names that start with PARTIAL-USERNAME. If there is only one and | |
| 541 PARTIAL-USERNAME matches it exactly, the car is t. The car is nil if | |
| 542 there is no user name starting with PARTIAL-USERNAME. The cdr of the | |
| 543 result is non-nil if and only if the completion returned in the car | |
| 544 was unique. | |
| 428 | 545 */ |
| 444 | 546 (partial_username)) |
| 428 | 547 { |
| 548 int uniq; | |
| 444 | 549 Lisp_Object completed = user_name_completion (partial_username, 0, &uniq); |
| 428 | 550 return Fcons (completed, uniq ? Qt : Qnil); |
| 551 } | |
| 552 | |
| 553 DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /* | |
| 444 | 554 Return a list of all user name completions from PARTIAL-USERNAME. |
| 555 These are all the user names which begin with PARTIAL-USERNAME. | |
| 428 | 556 */ |
| 444 | 557 (partial_username)) |
| 428 | 558 { |
| 444 | 559 return user_name_completion (partial_username, 1, NULL); |
| 428 | 560 } |
| 561 | |
| 440 | 562 struct user_name |
| 563 { | |
| 867 | 564 Ibyte *ptr; |
| 647 | 565 Bytecount len; |
| 440 | 566 }; |
| 567 | |
| 568 struct user_cache | |
| 569 { | |
| 570 struct user_name *user_names; | |
| 428 | 571 int length; |
| 572 int size; | |
| 573 EMACS_TIME last_rebuild_time; | |
| 574 }; | |
| 575 static struct user_cache user_cache; | |
| 576 | |
| 577 static void | |
| 578 free_user_cache (struct user_cache *cache) | |
| 579 { | |
| 580 int i; | |
| 581 for (i = 0; i < cache->length; i++) | |
|
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582 xfree (cache->user_names[i].ptr); |
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583 xfree (cache->user_names); |
| 440 | 584 xzero (*cache); |
| 428 | 585 } |
| 586 | |
| 587 static Lisp_Object | |
| 440 | 588 user_name_completion_unwind (Lisp_Object cache_incomplete_p) |
| 428 | 589 { |
| 528 | 590 #ifndef WIN32_NATIVE |
| 440 | 591 endpwent (); |
| 592 speed_up_interrupts (); | |
| 528 | 593 #endif |
| 428 | 594 |
| 440 | 595 if (! NILP (XCAR (cache_incomplete_p))) |
| 596 free_user_cache (&user_cache); | |
| 597 | |
| 853 | 598 free_cons (cache_incomplete_p); |
| 428 | 599 |
| 600 return Qnil; | |
| 601 } | |
| 602 | |
| 440 | 603 #define USER_CACHE_TTL (24*60*60) /* Time to live: 1 day, in seconds */ |
| 428 | 604 |
| 605 static Lisp_Object | |
| 606 user_name_completion (Lisp_Object user, int all_flag, int *uniq) | |
| 607 { | |
| 608 /* This function can GC */ | |
| 609 int matchcount = 0; | |
| 610 Lisp_Object bestmatch = Qnil; | |
| 611 Charcount bestmatchsize = 0; | |
| 612 Charcount user_name_length; | |
| 613 EMACS_TIME t; | |
| 614 int i; | |
| 615 struct gcpro gcpro1, gcpro2; | |
| 616 | |
| 617 GCPRO2 (user, bestmatch); | |
| 618 | |
| 619 CHECK_STRING (user); | |
| 620 | |
| 826 | 621 user_name_length = string_char_length (user); |
| 428 | 622 |
| 623 /* Cache user name lookups because it tends to be quite slow. | |
| 624 * Rebuild the cache occasionally to catch changes */ | |
| 625 EMACS_GET_TIME (t); | |
| 440 | 626 if (user_cache.user_names && |
| 428 | 627 (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time) |
| 440 | 628 > USER_CACHE_TTL)) |
| 629 free_user_cache (&user_cache); | |
| 428 | 630 |
| 440 | 631 if (!user_cache.user_names) |
| 428 | 632 { |
| 528 | 633 #ifndef WIN32_NATIVE |
| 428 | 634 struct passwd *pwd; |
| 528 | 635 #else |
| 636 DWORD entriesread; | |
| 637 DWORD totalentries; | |
| 638 DWORD resume_handle = 0; | |
| 639 #endif | |
| 640 | |
| 440 | 641 Lisp_Object cache_incomplete_p = noseeum_cons (Qt, Qnil); |
| 642 int speccount = specpdl_depth (); | |
| 643 | |
| 528 | 644 record_unwind_protect (user_name_completion_unwind, cache_incomplete_p); |
| 645 #ifndef WIN32_NATIVE | |
| 428 | 646 slow_down_interrupts (); |
| 647 setpwent (); | |
| 771 | 648 while ((pwd = qxe_getpwent ())) |
| 428 | 649 { |
| 650 QUIT; | |
| 440 | 651 DO_REALLOC (user_cache.user_names, user_cache.size, |
| 652 user_cache.length + 1, struct user_name); | |
| 771 | 653 user_cache.user_names[user_cache.length].ptr = |
| 867 | 654 (Ibyte *) xstrdup (pwd->pw_name); |
| 771 | 655 user_cache.user_names[user_cache.length].len = strlen (pwd->pw_name); |
| 440 | 656 user_cache.length++; |
| 428 | 657 } |
| 528 | 658 #else |
| 531 | 659 if (xNetUserEnum) |
| 528 | 660 { |
| 531 | 661 do |
| 528 | 662 { |
| 531 | 663 USER_INFO_0 *bufptr; |
| 664 NET_API_STATUS status_status_statui_statum_statu; | |
| 665 int i; | |
| 666 | |
| 667 QUIT; | |
| 668 status_status_statui_statum_statu = | |
| 669 xNetUserEnum (NULL, 0, 0, (LPBYTE *) &bufptr, 1024, | |
| 670 &entriesread, &totalentries, &resume_handle); | |
| 671 if (status_status_statui_statum_statu != NERR_Success && | |
| 672 status_status_statui_statum_statu != ERROR_MORE_DATA) | |
| 673 invalid_operation ("Error enumerating users", | |
| 674 make_int (GetLastError ())); | |
| 647 | 675 for (i = 0; i < (int) entriesread; i++) |
| 531 | 676 { |
| 677 DO_REALLOC (user_cache.user_names, user_cache.size, | |
| 678 user_cache.length + 1, struct user_name); | |
| 771 | 679 TO_INTERNAL_FORMAT (C_STRING, |
| 680 bufptr[i].usri0_name, | |
| 531 | 681 MALLOC, |
| 682 (user_cache. | |
| 683 user_names[user_cache.length].ptr, | |
| 684 user_cache. | |
| 685 user_names[user_cache.length].len), | |
| 771 | 686 Qmswindows_unicode); |
| 531 | 687 user_cache.length++; |
| 688 } | |
| 689 xNetApiBufferFree (bufptr); | |
| 528 | 690 } |
| 531 | 691 while (entriesread != totalentries); |
| 528 | 692 } |
| 546 | 693 else /* Win 9x */ |
| 694 { | |
| 695 Extbyte name[2 * (UNLEN + 1)]; | |
| 696 DWORD length = sizeof (name); | |
| 697 | |
| 771 | 698 if (qxeGetUserName (name, &length)) |
| 546 | 699 { |
| 700 DO_REALLOC (user_cache.user_names, user_cache.size, | |
| 701 user_cache.length + 1, struct user_name); | |
| 702 TO_INTERNAL_FORMAT (C_STRING, name, | |
| 703 MALLOC, | |
| 704 (user_cache. | |
| 705 user_names[user_cache.length].ptr, | |
| 706 user_cache. | |
| 707 user_names[user_cache.length].len), | |
| 708 Qmswindows_tstr); | |
| 709 user_cache.length++; | |
| 710 } | |
| 711 } | |
| 528 | 712 #endif |
| 713 | |
| 440 | 714 XCAR (cache_incomplete_p) = Qnil; |
| 771 | 715 unbind_to (speccount); |
| 440 | 716 |
| 428 | 717 EMACS_GET_TIME (user_cache.last_rebuild_time); |
| 718 } | |
| 719 | |
| 720 for (i = 0; i < user_cache.length; i++) | |
| 721 { | |
| 867 | 722 Ibyte *u_name = user_cache.user_names[i].ptr; |
| 440 | 723 Bytecount len = user_cache.user_names[i].len; |
| 428 | 724 /* scmp() works in chars, not bytes, so we have to compute this: */ |
| 725 Charcount cclen = bytecount_to_charcount (u_name, len); | |
| 726 | |
| 727 QUIT; | |
| 728 | |
| 729 if (cclen < user_name_length | |
| 730 || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0)) | |
| 731 continue; | |
| 732 | |
| 733 matchcount++; /* count matching completions */ | |
| 734 | |
| 735 if (all_flag || NILP (bestmatch)) | |
| 736 { | |
| 737 Lisp_Object name = Qnil; | |
| 738 struct gcpro ngcpro1; | |
| 739 NGCPRO1 (name); | |
| 740 /* This is a possible completion */ | |
| 741 name = make_string (u_name, len); | |
| 742 if (all_flag) | |
| 743 { | |
| 744 bestmatch = Fcons (name, bestmatch); | |
| 745 } | |
| 746 else | |
| 747 { | |
| 748 bestmatch = name; | |
| 826 | 749 bestmatchsize = string_char_length (name); |
| 428 | 750 } |
| 751 NUNGCPRO; | |
| 752 } | |
| 753 else | |
| 754 { | |
| 755 Charcount compare = min (bestmatchsize, cclen); | |
| 867 | 756 Ibyte *p1 = XSTRING_DATA (bestmatch); |
| 757 Ibyte *p2 = u_name; | |
| 428 | 758 Charcount matchsize = scmp_1 (p1, p2, compare, 0); |
| 759 | |
| 760 if (matchsize < 0) | |
| 761 matchsize = compare; | |
| 762 | |
| 763 bestmatchsize = matchsize; | |
| 764 } | |
| 765 } | |
| 766 | |
| 767 UNGCPRO; | |
| 768 | |
| 769 if (uniq) | |
| 770 *uniq = (matchcount == 1); | |
| 771 | |
| 772 if (all_flag || NILP (bestmatch)) | |
| 773 return bestmatch; | |
| 774 if (matchcount == 1 && bestmatchsize == user_name_length) | |
| 775 return Qt; | |
|
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776 return Fsubseq (bestmatch, Qzero, make_int (bestmatchsize)); |
| 428 | 777 } |
| 778 | |
| 779 | |
| 780 Lisp_Object | |
|
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781 make_directory_hash_table (Lisp_Object path) |
| 428 | 782 { |
| 783 DIR *d; | |
|
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784 if ((d = qxe_opendir (XSTRING_DATA (path)))) |
| 428 | 785 { |
|
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786 Lisp_Object hash_table_test = Qequal, hash = Qnil; |
| 428 | 787 DIRENTRY *dp; |
|
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788 |
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789 if (!UNBOUNDP (XSYMBOL_FUNCTION (Qfile_system_ignore_case_p)) |
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790 && !NILP (call1 (Qfile_system_ignore_case_p, path))) |
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791 { |
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792 hash_table_test = Qequalp; |
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793 } |
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794 |
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795 hash = make_lisp_hash_table (20, HASH_TABLE_NON_WEAK, hash_table_test); |
| 428 | 796 |
| 771 | 797 while ((dp = qxe_readdir (d))) |
| 428 | 798 { |
| 799 Bytecount len = NAMLEN (dp); | |
| 800 if (DIRENTRY_NONEMPTY (dp)) | |
| 867 | 801 /* Cast to Ibyte* is OK, as qxe_readdir() Mule-encapsulates. */ |
| 802 Fputhash (make_string ((Ibyte *) dp->d_name, len), Qt, hash); | |
| 428 | 803 } |
| 771 | 804 qxe_closedir (d); |
| 428 | 805 return hash; |
| 806 } | |
| 807 else | |
| 808 return Qnil; | |
| 809 } | |
| 810 | |
| 707 | 811 #if 0 |
| 812 /* ... never used ... should use list2 directly anyway ... */ | |
| 813 /* NOTE: This function can never return a negative value. */ | |
| 428 | 814 Lisp_Object |
| 815 wasteful_word_to_lisp (unsigned int item) | |
| 816 { | |
| 817 /* Compatibility: in other versions, file-attributes returns a LIST | |
| 818 of two 16 bit integers... */ | |
| 819 Lisp_Object cons = word_to_lisp (item); | |
| 820 XCDR (cons) = Fcons (XCDR (cons), Qnil); | |
| 821 return cons; | |
| 822 } | |
| 707 | 823 #endif |
| 428 | 824 |
| 825 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 0, /* | |
| 826 Return a list of attributes of file FILENAME. | |
| 827 Value is nil if specified file cannot be opened. | |
| 828 Otherwise, list elements are: | |
| 829 0. t for directory, string (name linked to) for symbolic link, or nil. | |
| 830 1. Number of links to file. | |
| 831 2. File uid. | |
| 832 3. File gid. | |
| 833 4. Last access time, as a list of two integers. | |
| 834 First integer has high-order 16 bits of time, second has low 16 bits. | |
| 835 5. Last modification time, likewise. | |
| 836 6. Last status change time, likewise. | |
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837 7. Size in bytes. (-1, if number out of range and no bignum support.) |
| 428 | 838 8. File modes, as a string of ten letters or dashes as in ls -l. |
| 839 9. t iff file's gid would change if file were deleted and recreated. | |
| 840 10. inode number. | |
| 841 11. Device number. | |
| 842 | |
| 843 If file does not exist, returns nil. | |
| 844 */ | |
| 845 (filename)) | |
| 846 { | |
| 847 /* This function can GC. GC checked 1997.06.04. */ | |
| 848 Lisp_Object values[12]; | |
| 849 Lisp_Object directory = Qnil; | |
| 850 struct stat s; | |
| 851 char modes[10]; | |
| 852 Lisp_Object handler; | |
| 853 struct gcpro gcpro1, gcpro2; | |
| 854 | |
| 855 GCPRO2 (filename, directory); | |
| 856 filename = Fexpand_file_name (filename, Qnil); | |
| 857 | |
| 858 /* If the file name has special constructs in it, | |
| 859 call the corresponding file handler. */ | |
| 860 handler = Ffind_file_name_handler (filename, Qfile_attributes); | |
| 861 if (!NILP (handler)) | |
| 862 { | |
| 863 UNGCPRO; | |
| 864 return call2 (handler, Qfile_attributes, filename); | |
| 865 } | |
| 866 | |
| 771 | 867 if (qxe_lstat (XSTRING_DATA (filename), &s) < 0) |
| 428 | 868 { |
| 869 UNGCPRO; | |
| 870 return Qnil; | |
| 871 } | |
| 872 | |
| 873 #ifdef BSD4_2 | |
| 874 directory = Ffile_name_directory (filename); | |
| 875 #endif | |
| 876 | |
| 442 | 877 #if 0 /* #### shouldn't this apply to WIN32_NATIVE and maybe CYGWIN? */ |
| 428 | 878 { |
| 867 | 879 Ibyte *tmpnam = XSTRING_DATA (Ffile_name_nondirectory (filename)); |
| 771 | 880 Bytecount l = qxestrlen (tmpnam); |
| 428 | 881 |
| 882 if (l >= 5 | |
| 883 && S_ISREG (s.st_mode) | |
| 771 | 884 && (qxestrcasecmp (&tmpnam[l - 4], ".com") == 0 || |
| 885 qxestrcasecmp (&tmpnam[l - 4], ".exe") == 0 || | |
| 886 qxestrcasecmp (&tmpnam[l - 4], ".bat") == 0)) | |
| 428 | 887 { |
| 888 s.st_mode |= S_IEXEC; | |
| 889 } | |
| 890 } | |
| 442 | 891 #endif |
| 428 | 892 |
| 893 switch (s.st_mode & S_IFMT) | |
| 894 { | |
| 895 default: | |
| 896 values[0] = Qnil; | |
| 897 break; | |
| 898 case S_IFDIR: | |
| 899 values[0] = Qt; | |
| 900 break; | |
| 901 #ifdef S_IFLNK | |
| 902 case S_IFLNK: | |
| 903 values[0] = Ffile_symlink_p (filename); | |
| 904 break; | |
| 905 #endif | |
| 906 } | |
| 907 values[1] = make_int (s.st_nlink); | |
| 908 values[2] = make_int (s.st_uid); | |
| 909 values[3] = make_int (s.st_gid); | |
| 707 | 910 values[4] = make_time (s.st_atime); |
| 911 values[5] = make_time (s.st_mtime); | |
| 912 values[6] = make_time (s.st_ctime); | |
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913 |
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914 #ifndef HAVE_BIGNUM |
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915 values[7] = make_integer (NUMBER_FITS_IN_AN_EMACS_INT (s.st_size) ? |
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916 (EMACS_INT)s.st_size : -1); |
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917 #else |
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918 values[7] = make_integer (s.st_size); |
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919 #endif |
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920 |
| 428 | 921 filemodestring (&s, modes); |
| 867 | 922 values[8] = make_string ((Ibyte *) modes, 10); |
| 428 | 923 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
| 924 { | |
| 925 struct stat sdir; | |
| 926 | |
| 771 | 927 if (!NILP (directory) && qxe_stat (XSTRING_DATA (directory), &sdir) == 0) |
| 428 | 928 values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
| 929 else /* if we can't tell, assume worst */ | |
| 930 values[9] = Qt; | |
| 931 } | |
| 932 #else /* file gid will be egid */ | |
| 933 values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
| 934 #endif /* BSD4_2 or BSD4_3 */ | |
| 935 values[10] = make_int (s.st_ino); | |
| 936 values[11] = make_int (s.st_dev); | |
| 937 UNGCPRO; | |
| 938 return Flist (countof (values), values); | |
| 939 } | |
| 940 | |
| 941 | |
| 942 /************************************************************************/ | |
| 943 /* initialization */ | |
| 944 /************************************************************************/ | |
| 945 | |
| 946 void | |
| 947 syms_of_dired (void) | |
| 948 { | |
| 563 | 949 DEFSYMBOL (Qdirectory_files); |
| 950 DEFSYMBOL (Qfile_name_completion); | |
| 951 DEFSYMBOL (Qfile_name_all_completions); | |
| 952 DEFSYMBOL (Qfile_attributes); | |
|
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953 DEFSYMBOL (Qfile_system_ignore_case_p); |
| 428 | 954 |
| 955 DEFSUBR (Fdirectory_files); | |
| 956 DEFSUBR (Ffile_name_completion); | |
| 957 DEFSUBR (Ffile_name_all_completions); | |
| 958 DEFSUBR (Fuser_name_completion); | |
| 959 DEFSUBR (Fuser_name_completion_1); | |
| 960 DEFSUBR (Fuser_name_all_completions); | |
| 961 DEFSUBR (Ffile_attributes); | |
| 962 } | |
| 963 | |
| 964 void | |
| 965 vars_of_dired (void) | |
| 966 { | |
| 967 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /* | |
| 968 *Completion ignores filenames ending in any string in this list. | |
| 969 This variable does not affect lists of possible completions, | |
| 970 but does affect the commands that actually do completions. | |
| 770 | 971 It is used by the function `file-name-completion'. |
| 428 | 972 */ ); |
| 973 Vcompletion_ignored_extensions = Qnil; | |
| 974 } |