1. Nic Ferrier
  2. emacs

Source

emacs / lisp / progmodes / grep.el

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
;;; grep.el --- run `grep' and display the results

;; Copyright (C) 1985-1987, 1993-1999, 2001-2011
;;   Free Software Foundation, Inc.

;; Author: Roland McGrath <roland@gnu.org>
;; Maintainer: FSF
;; Keywords: tools, processes

;; This file is part of GNU Emacs.

;; GNU Emacs 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.

;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; This package provides the grep facilities documented in the Emacs
;; user's manual.

;;; Code:

(require 'compile)


(defgroup grep nil
  "Run `grep' and display the results."
  :group 'tools
  :group 'processes)

(defvar grep-host-defaults-alist nil
  "Default values depending on target host.
`grep-compute-defaults' returns default values for every local or
remote host `grep' runs.  These values can differ from host to
host.  Once computed, the default values are kept here in order
to avoid computing them again.")

(defun grep-apply-setting (symbol value)
  "Set SYMBOL to VALUE, and update `grep-host-defaults-alist'.
SYMBOL should be one of `grep-command', `grep-template',
`grep-use-null-device', `grep-find-command',
`grep-find-template', `grep-find-use-xargs', or
`grep-highlight-matches'."
  (when grep-host-defaults-alist
    (let* ((host-id
	    (intern (or (file-remote-p default-directory) "localhost")))
	   (host-defaults (assq host-id grep-host-defaults-alist))
	   (defaults (assq nil grep-host-defaults-alist)))
      (setcar (cdr (assq symbol host-defaults)) value)
      (setcar (cdr (assq symbol defaults)) value)))
  (set-default symbol value))

;;;###autoload
(defcustom grep-window-height nil
  "*Number of lines in a grep window.  If nil, use `compilation-window-height'."
  :type '(choice (const :tag "Default" nil)
		 integer)
  :version "22.1"
  :group 'grep)

(defcustom grep-highlight-matches 'auto-detect
  "Use special markers to highlight grep matches.

Some grep programs are able to surround matches with special
markers in grep output.  Such markers can be used to highlight
matches in grep mode.  This requires `font-lock-mode' to be active
in grep buffers, so if you have globally disabled font-lock-mode,
you will not get highlighting.

This option sets the environment variable GREP_COLORS to specify
markers for highlighting and GREP_OPTIONS to add the --color
option in front of any explicit grep options before starting
the grep.

When this option is `auto', grep uses `--color=auto' to highlight
matches only when it outputs to a terminal (when `grep' is the last
command in the pipe), thus avoiding the use of any potentially-harmful
escape sequences when standard output goes to a file or pipe.

To make grep highlight matches even into a pipe, you need the option
`always' that forces grep to use `--color=always' to unconditionally
output escape sequences.

In interactive usage, the actual value of this variable is set up
by `grep-compute-defaults' when the default value is `auto-detect'.
To change the default value, use Customize or call the function
`grep-apply-setting'."
  :type '(choice (const :tag "Do not highlight matches with grep markers" nil)
		 (const :tag "Highlight matches with grep markers" t)
		 (const :tag "Use --color=always" always)
		 (const :tag "Use --color=auto" auto)
		 (other :tag "Not Set" auto-detect))
  :set 'grep-apply-setting
  :version "22.1"
  :group 'grep)

(defcustom grep-scroll-output nil
  "*Non-nil to scroll the *grep* buffer window as output appears.

Setting it causes the grep commands to put point at the end of their
output window so that the end of the output is always visible rather
than the beginning."
  :type 'boolean
  :version "22.1"
  :group 'grep)

;;;###autoload
(defcustom grep-command nil
  "The default grep command for \\[grep].
If the grep program used supports an option to always include file names
in its output (such as the `-H' option to GNU grep), it's a good idea to
include it when specifying `grep-command'.

In interactive usage, the actual value of this variable is set up
by `grep-compute-defaults'; to change the default value, use
Customize or call the function `grep-apply-setting'."
  :type '(choice string
		 (const :tag "Not Set" nil))
  :set 'grep-apply-setting
  :group 'grep)

(defcustom grep-template nil
  "The default command to run for \\[lgrep].
The following place holders should be present in the string:
 <C> - place to put -i if case insensitive grep.
 <F> - file names and wildcards to search.
 <X> - file names and wildcards to exclude.
 <R> - the regular expression searched for.
 <N> - place to insert null-device.

In interactive usage, the actual value of this variable is set up
by `grep-compute-defaults'; to change the default value, use
Customize or call the function `grep-apply-setting'."
  :type '(choice string
		 (const :tag "Not Set" nil))
  :set 'grep-apply-setting
  :version "22.1"
  :group 'grep)

(defcustom grep-use-null-device 'auto-detect
  "If t, append the value of `null-device' to `grep' commands.
This is done to ensure that the output of grep includes the filename of
any match in the case where only a single file is searched, and is not
necessary if the grep program used supports the `-H' option.

In interactive usage, the actual value of this variable is set up
by `grep-compute-defaults'; to change the default value, use
Customize or call the function `grep-apply-setting'."
  :type '(choice (const :tag "Do Not Append Null Device" nil)
		 (const :tag "Append Null Device" t)
		 (other :tag "Not Set" auto-detect))
  :set 'grep-apply-setting
  :group 'grep)

;;;###autoload
(defcustom grep-find-command nil
  "The default find command for \\[grep-find].
In interactive usage, the actual value of this variable is set up
by `grep-compute-defaults'; to change the default value, use
Customize or call the function `grep-apply-setting'."
  :type '(choice string
		 (const :tag "Not Set" nil))
  :set 'grep-apply-setting
  :group 'grep)

(defcustom grep-find-template nil
  "The default command to run for \\[rgrep].
The following place holders should be present in the string:
 <D> - base directory for find
 <X> - find options to restrict or expand the directory list
 <F> - find options to limit the files matched
 <C> - place to put -i if case insensitive grep
 <R> - the regular expression searched for.
In interactive usage, the actual value of this variable is set up
by `grep-compute-defaults'; to change the default value, use
Customize or call the function `grep-apply-setting'."
  :type '(choice string
		 (const :tag "Not Set" nil))
  :set 'grep-apply-setting
  :version "22.1"
  :group 'grep)

(defcustom grep-files-aliases
  '(("all" .   "* .*")
    ("el" .    "*.el")
    ("ch" .    "*.[ch]")
    ("c" .     "*.c")
    ("cc" .    "*.cc *.cxx *.cpp *.C *.CC *.c++")
    ("cchh" .  "*.cc *.[ch]xx *.[ch]pp *.[CHh] *.CC *.HH *.[ch]++")
    ("hh" .    "*.hxx *.hpp *.[Hh] *.HH *.h++")
    ("h" .     "*.h")
    ("l" .     "[Cc]hange[Ll]og*")
    ("m" .     "[Mm]akefile*")
    ("tex" .   "*.tex")
    ("texi" .  "*.texi")
    ("asm" .   "*.[sS]"))
  "*Alist of aliases for the FILES argument to `lgrep' and `rgrep'."
  :type 'alist
  :group 'grep)

(defcustom grep-find-ignored-directories
  vc-directory-exclusion-list
  "*List of names of sub-directories which `rgrep' shall not recurse into.
If an element is a cons cell, the car is called on the search directory
to determine whether cdr should not be recursed into."
  :type '(choice (repeat :tag "Ignored directories" string)
		 (const :tag "No ignored directories" nil))
  :group 'grep)

(defcustom grep-find-ignored-files
  (cons ".#*" (delq nil (mapcar (lambda (s)
				  (unless (string-match-p "/\\'" s)
				    (concat "*" s)))
				completion-ignored-extensions)))
  "*List of file names which `rgrep' and `lgrep' shall exclude.
If an element is a cons cell, the car is called on the search directory
to determine whether cdr should not be excluded."
  :type '(choice (repeat :tag "Ignored file" string)
		 (const :tag "No ignored files" nil))
  :group 'grep)

(defcustom grep-error-screen-columns nil
  "*If non-nil, column numbers in grep hits are screen columns.
See `compilation-error-screen-columns'"
  :type '(choice (const :tag "Default" nil)
		 integer)
  :version "22.1"
  :group 'grep)

;;;###autoload
(defcustom grep-setup-hook nil
  "List of hook functions run by `grep-process-setup' (see `run-hooks')."
  :type 'hook
  :group 'grep)

(defvar grep-mode-map
  (let ((map (make-sparse-keymap)))
    (set-keymap-parent map compilation-minor-mode-map)
    (define-key map " " 'scroll-up-command)
    (define-key map "\^?" 'scroll-down-command)
    (define-key map "\C-c\C-f" 'next-error-follow-minor-mode)

    (define-key map "\r" 'compile-goto-error)  ;; ?
    (define-key map "n" 'next-error-no-select)
    (define-key map "p" 'previous-error-no-select)
    (define-key map "{" 'compilation-previous-file)
    (define-key map "}" 'compilation-next-file)
    (define-key map "\t" 'compilation-next-error)
    (define-key map [backtab] 'compilation-previous-error)

    ;; Set up the menu-bar
    (define-key map [menu-bar grep]
      (cons "Grep" (make-sparse-keymap "Grep")))

    (define-key map [menu-bar grep compilation-kill-compilation]
      '(menu-item "Kill Grep" kill-compilation
		  :help "Kill the currently running grep process"))
    (define-key map [menu-bar grep compilation-separator2] '("----"))
    (define-key map [menu-bar grep compilation-compile]
      '(menu-item "Compile..." compile
		  :help "Compile the program including the current buffer.  Default: run `make'"))
    (define-key map [menu-bar grep compilation-rgrep]
      '(menu-item "Recursive grep..." rgrep
		  :help "User-friendly recursive grep in directory tree"))
    (define-key map [menu-bar grep compilation-lgrep]
      '(menu-item "Local grep..." lgrep
		  :help "User-friendly grep in a directory"))
    (define-key map [menu-bar grep compilation-grep-find]
      '(menu-item "Grep via Find..." grep-find
		  :help "Run grep via find, with user-specified args"))
    (define-key map [menu-bar grep compilation-grep]
      '(menu-item "Another grep..." grep
		  :help "Run grep, with user-specified args, and collect output in a buffer."))
    (define-key map [menu-bar grep compilation-recompile]
      '(menu-item "Repeat grep" recompile
		  :help "Run grep again"))
    (define-key map [menu-bar grep compilation-separator2] '("----"))
    (define-key map [menu-bar grep compilation-first-error]
      '(menu-item "First Match" first-error
		  :help "Restart at the first match, visit corresponding location"))
    (define-key map [menu-bar grep compilation-previous-error]
      '(menu-item "Previous Match" previous-error
		  :help "Visit the previous match and corresponding location"))
    (define-key map [menu-bar grep compilation-next-error]
      '(menu-item "Next Match" next-error
		  :help "Visit the next match and corresponding location"))
    map)
  "Keymap for grep buffers.
`compilation-minor-mode-map' is a cdr of this.")

(defvar grep-mode-tool-bar-map
  ;; When bootstrapping, tool-bar-map is not properly initialized yet,
  ;; so don't do anything.
  (when (keymapp (butlast tool-bar-map))
    (let ((map (butlast (copy-keymap tool-bar-map)))
	  (help (last tool-bar-map))) ;; Keep Help last in tool bar
      (tool-bar-local-item
       "left-arrow" 'previous-error-no-select 'previous-error-no-select map
       :rtl "right-arrow"
       :help "Goto previous match")
      (tool-bar-local-item
       "right-arrow" 'next-error-no-select 'next-error-no-select map
       :rtl "left-arrow"
       :help "Goto next match")
      (tool-bar-local-item
       "cancel" 'kill-compilation 'kill-compilation map
       :enable '(let ((buffer (compilation-find-buffer)))
		  (get-buffer-process buffer))
       :help "Stop grep")
      (tool-bar-local-item
       "refresh" 'recompile 'recompile map
       :help "Restart grep")
      (append map help))))

(defalias 'kill-grep 'kill-compilation)

;;;; TODO --- refine this!!

;; (defcustom grep-use-compilation-buffer t
;;   "When non-nil, grep specific commands update `compilation-last-buffer'.
;; This means that standard compile commands like \\[next-error] and \\[compile-goto-error]
;; can be used to navigate between grep matches (the default).
;; Otherwise, the grep specific commands like \\[grep-next-match] must
;; be used to navigate between grep matches."
;;   :type 'boolean
;;   :group 'grep)

;; override compilation-last-buffer
(defvar grep-last-buffer nil
  "The most recent grep buffer.
A grep buffer becomes most recent when you select Grep mode in it.
Notice that using \\[next-error] or \\[compile-goto-error] modifies
`compilation-last-buffer' rather than `grep-last-buffer'.")

;;;###autoload
(defconst grep-regexp-alist
  '(
    ;; Rule to match column numbers is commented out since no known grep
    ;; produces them
    ;; ("^\\(.+?\\)\\(:[ \t]*\\)\\([1-9][0-9]*\\)\\2\\(?:\\([1-9][0-9]*\\)\\(?:-\\([1-9][0-9]*\\)\\)?\\2\\)?"
    ;;  1 3 (4 . 5))
    ;; Note that we want to use as tight a regexp as we can to try and
    ;; handle weird file names (with colons in them) as well as possible.
    ;; E.g. we use [1-9][0-9]* rather than [0-9]+ so as to accept ":034:"
    ;; in file names.
    ("^\\(.+?\\)\\(:[ \t]*\\)\\([1-9][0-9]*\\)\\2"
     1 3
     ;; Calculate column positions (col . end-col) of first grep match on a line
     ((lambda ()
	(when grep-highlight-matches
	  (let* ((beg (match-end 0))
		 (end (save-excursion (goto-char beg) (line-end-position)))
		 (mbeg (text-property-any beg end 'font-lock-face 'match)))
	    (when mbeg
	      (- mbeg beg)))))
      .
      (lambda ()
	(when grep-highlight-matches
	  (let* ((beg (match-end 0))
		 (end (save-excursion (goto-char beg) (line-end-position)))
		 (mbeg (text-property-any beg end 'font-lock-face 'match))
		 (mend (and mbeg (next-single-property-change mbeg 'font-lock-face nil end))))
	    (when mend
	      (- mend beg)))))))
    ("^Binary file \\(.+\\) matches$" 1 nil nil 0 1))
  "Regexp used to match grep hits.  See `compilation-error-regexp-alist'.")

(defvar grep-error "grep hit"
  "Message to print when no matches are found.")

;; Reverse the colors because grep hits are not errors (though we jump there
;; with `next-error'), and unreadable files can't be gone to.
(defvar grep-hit-face	compilation-info-face
  "Face name to use for grep hits.")

(defvar grep-error-face	'compilation-error
  "Face name to use for grep error messages.")

(defvar grep-match-face	'match
  "Face name to use for grep matches.")

(defvar grep-context-face 'shadow
  "Face name to use for grep context lines.")

(defvar grep-mode-font-lock-keywords
   '(;; Command output lines.
     (": \\(.+\\): \\(?:Permission denied\\|No such \\(?:file or directory\\|device or address\\)\\)$"
      1 grep-error-face)
     ;; remove match from grep-regexp-alist before fontifying
     ("^Grep[/a-zA-z]* started.*"
      (0 '(face nil compilation-message nil help-echo nil mouse-face nil) t))
     ("^Grep[/a-zA-z]* finished \\(?:(\\(matches found\\))\\|with \\(no matches found\\)\\).*"
      (0 '(face nil compilation-message nil help-echo nil mouse-face nil) t)
      (1 compilation-info-face nil t)
      (2 compilation-warning-face nil t))
     ("^Grep[/a-zA-z]* \\(exited abnormally\\|interrupt\\|killed\\|terminated\\)\\(?:.*with code \\([0-9]+\\)\\)?.*"
      (0 '(face nil compilation-message nil help-echo nil mouse-face nil) t)
      (1 grep-error-face)
      (2 grep-error-face nil t))
     ("^.+?-[0-9]+-.*\n" (0 grep-context-face)))
   "Additional things to highlight in grep output.
This gets tacked on the end of the generated expressions.")

;;;###autoload
(defvar grep-program (purecopy "grep")
  "The default grep program for `grep-command' and `grep-find-command'.
This variable's value takes effect when `grep-compute-defaults' is called.")

;;;###autoload
(defvar find-program (purecopy "find")
  "The default find program for `grep-find-command'.
This variable's value takes effect when `grep-compute-defaults' is called.")

;;;###autoload
(defvar xargs-program (purecopy "xargs")
  "The default xargs program for `grep-find-command'.
See `grep-find-use-xargs'.
This variable's value takes effect when `grep-compute-defaults' is called.")

;;;###autoload
(defvar grep-find-use-xargs nil
  "How to invoke find and grep.
If `exec', use `find -exec {} ;'.
If `exec-plus' use `find -exec {} +'.
If `gnu', use `find -print0' and `xargs -0'.
Any other value means to use `find -print' and `xargs'.

This variable's value takes effect when `grep-compute-defaults' is called.")

;; History of grep commands.
;;;###autoload
(defvar grep-history nil "History list for grep.")
;;;###autoload
(defvar grep-find-history nil "History list for grep-find.")

;; History of lgrep and rgrep regexp and files args.
(defvar grep-regexp-history nil)
(defvar grep-files-history nil)

;;;###autoload
(defun grep-process-setup ()
  "Setup compilation variables and buffer for `grep'.
Set up `compilation-exit-message-function' and run `grep-setup-hook'."
  (when (eq grep-highlight-matches 'auto-detect)
    (grep-compute-defaults))
  (unless (or (eq grep-highlight-matches 'auto-detect)
	      (null grep-highlight-matches)
	      ;; Don't output color escapes if they can't be
	      ;; highlighted with `font-lock-face' by `grep-filter'.
	      (null font-lock-mode))
    ;; `setenv' modifies `process-environment' let-bound in `compilation-start'
    ;; Any TERM except "dumb" allows GNU grep to use `--color=auto'
    (setenv "TERM" "emacs-grep")
    (setenv "GREP_OPTIONS"
	    (concat (getenv "GREP_OPTIONS")
		    " --color=" (if (eq grep-highlight-matches 'always)
				    "always" "auto")))
    ;; GREP_COLOR is used in GNU grep 2.5.1, but deprecated in later versions
    (setenv "GREP_COLOR" "01;31")
    ;; GREP_COLORS is used in GNU grep 2.5.2 and later versions
    (setenv "GREP_COLORS" "mt=01;31:fn=:ln=:bn=:se=:sl=:cx=:ne"))
  (set (make-local-variable 'compilation-exit-message-function)
       (lambda (status code msg)
	 (if (eq status 'exit)
	     ;; This relies on the fact that `compilation-start'
	     ;; sets buffer-modified to nil before running the command,
	     ;; so the buffer is still unmodified if there is no output.
	     (cond ((and (zerop code) (buffer-modified-p))
		    '("finished (matches found)\n" . "matched"))
		   ((not (buffer-modified-p))
		    '("finished with no matches found\n" . "no match"))
		   (t
		    (cons msg code)))
	   (cons msg code))))
  (run-hooks 'grep-setup-hook))

(defun grep-filter ()
  "Handle match highlighting escape sequences inserted by the grep process.
This function is called from `compilation-filter-hook'."
  (save-excursion
    (forward-line 0)
    (let ((end (point)) beg)
      (goto-char compilation-filter-start)
      (forward-line 0)
      (setq beg (point))
      ;; Only operate on whole lines so we don't get caught with part of an
      ;; escape sequence in one chunk and the rest in another.
      (when (< (point) end)
        (setq end (copy-marker end))
        ;; Highlight grep matches and delete marking sequences.
        (while (re-search-forward "\033\\[0?1;31m\\(.*?\\)\033\\[[0-9]*m" end 1)
          (replace-match (propertize (match-string 1)
                                     'face nil 'font-lock-face grep-match-face)
                         t t))
        ;; Delete all remaining escape sequences
        (goto-char beg)
        (while (re-search-forward "\033\\[[0-9;]*[mK]" end 1)
          (replace-match "" t t))))))

(defun grep-probe (command args &optional func result)
  (let (process-file-side-effects)
    (equal (condition-case nil
	       (apply (or func 'process-file) command args)
	     (error nil))
	   (or result 0))))

;;;###autoload
(defun grep-compute-defaults ()
  ;; Keep default values.
  (unless grep-host-defaults-alist
    (add-to-list
     'grep-host-defaults-alist
     (cons nil
	   `((grep-command ,grep-command)
	     (grep-template ,grep-template)
	     (grep-use-null-device ,grep-use-null-device)
	     (grep-find-command ,grep-find-command)
	     (grep-find-template ,grep-find-template)
	     (grep-find-use-xargs ,grep-find-use-xargs)
	     (grep-highlight-matches ,grep-highlight-matches)))))
  (let* ((host-id
	  (intern (or (file-remote-p default-directory) "localhost")))
	 (host-defaults (assq host-id grep-host-defaults-alist))
	 (defaults (assq nil grep-host-defaults-alist)))
    ;; There are different defaults on different hosts.  They must be
    ;; computed for every host once.
    (dolist (setting '(grep-command grep-template
		       grep-use-null-device grep-find-command
		       grep-find-template grep-find-use-xargs
		       grep-highlight-matches))
      (set setting
	   (cadr (or (assq setting host-defaults)
		     (assq setting defaults)))))

    (unless (or (not grep-use-null-device) (eq grep-use-null-device t))
      (setq grep-use-null-device
	    (with-temp-buffer
	      (let ((hello-file (expand-file-name "HELLO" data-directory)))
		(not
		 (and (if grep-command
			  ;; `grep-command' is already set, so
			  ;; use that for testing.
			  (grep-probe grep-command
				      `(nil t nil "^English" ,hello-file)
				      #'call-process-shell-command)
			;; otherwise use `grep-program'
			(grep-probe grep-program
				    `(nil t nil "-nH" "^English" ,hello-file)))
		      (progn
			(goto-char (point-min))
			(looking-at
			 (concat (regexp-quote hello-file)
				 ":[0-9]+:English")))))))))
    (unless (and grep-command grep-find-command
		 grep-template grep-find-template)
      (let ((grep-options
	     (concat (if grep-use-null-device "-n" "-nH")
		     (if (grep-probe grep-program
				     `(nil nil nil "-e" "foo" ,null-device)
				     nil 1)
			 " -e"))))
	(unless grep-command
	  (setq grep-command
		(format "%s %s " grep-program grep-options)))
	(unless grep-template
	  (setq grep-template
		(format "%s <X> <C> %s <R> <F>" grep-program grep-options)))
	(unless grep-find-use-xargs
	  (setq grep-find-use-xargs
		(cond
		 ((grep-probe find-program
			      `(nil nil nil ,null-device "-exec" "echo"
				    "{}" "+"))
		  'exec-plus)
		 ((and
		   (grep-probe find-program `(nil nil nil ,null-device "-print0"))
		   (grep-probe xargs-program `(nil nil nil "-0" "-e" "echo")))
		  'gnu)
		 (t
		  'exec))))
	(unless grep-find-command
	  (setq grep-find-command
		(cond ((eq grep-find-use-xargs 'gnu)
		       ;; Windows shells need the program file name
		       ;; after the pipe symbol be quoted if they use
		       ;; forward slashes as directory separators.
		       (format "%s . -type f -print0 | \"%s\" -0 -e %s"
			       find-program xargs-program grep-command))
		      ((memq grep-find-use-xargs '(exec exec-plus))
		       (let ((cmd0 (format "%s . -type f -exec %s"
					   find-program grep-command))
			     (null (if grep-use-null-device
				       (format "%s " null-device)
				     "")))
			 (cons
			  (if (eq grep-find-use-xargs 'exec-plus)
			      (format "%s %s{} +" cmd0 null)
			    (format "%s {} %s%s" cmd0 null
				    (shell-quote-argument ";")))
			  (1+ (length cmd0)))))
		      (t
		       (format "%s . -type f -print | \"%s\" %s"
			       find-program xargs-program grep-command)))))
	(unless grep-find-template
	  (setq grep-find-template
		(let ((gcmd (format "%s <C> %s <R>"
				    grep-program grep-options))
		      (null (if grep-use-null-device
				(format "%s " null-device)
			      "")))
		  (cond ((eq grep-find-use-xargs 'gnu)
			 (format "%s . <X> -type f <F> -print0 | \"%s\" -0 -e %s"
				 find-program xargs-program gcmd))
			((eq grep-find-use-xargs 'exec)
			 (format "%s . <X> -type f <F> -exec %s {} %s%s"
				 find-program gcmd null
				 (shell-quote-argument ";")))
			((eq grep-find-use-xargs 'exec-plus)
			 (format "%s . <X> -type f <F> -exec %s %s{} +"
				 find-program gcmd null))
			(t
			 (format "%s . <X> -type f <F> -print | \"%s\" %s"
				 find-program xargs-program gcmd))))))))
    (when (eq grep-highlight-matches 'auto-detect)
      (setq grep-highlight-matches
	    (with-temp-buffer
	      (and (grep-probe grep-program '(nil t nil "--help"))
		   (progn
		     (goto-char (point-min))
		     (search-forward "--color" nil t))
		   ;; Windows and DOS pipes fail `isatty' detection in Grep.
		   (if (memq system-type '(windows-nt ms-dos))
		       'always 'auto)))))

    ;; Save defaults for this host.
    (setq grep-host-defaults-alist
	  (delete (assq host-id grep-host-defaults-alist)
		  grep-host-defaults-alist))
    (add-to-list
     'grep-host-defaults-alist
     (cons host-id
	   `((grep-command ,grep-command)
	     (grep-template ,grep-template)
	     (grep-use-null-device ,grep-use-null-device)
	     (grep-find-command ,grep-find-command)
	     (grep-find-template ,grep-find-template)
	     (grep-find-use-xargs ,grep-find-use-xargs)
	     (grep-highlight-matches ,grep-highlight-matches))))))

(defun grep-tag-default ()
  (or (and transient-mark-mode mark-active
	   (/= (point) (mark))
	   (buffer-substring-no-properties (point) (mark)))
      (funcall (or find-tag-default-function
		   (get major-mode 'find-tag-default-function)
		   'find-tag-default))
      ""))

(defun grep-default-command ()
  "Compute the default grep command for \\[universal-argument] \\[grep] to offer."
  (let ((tag-default (shell-quote-argument (grep-tag-default)))
	;; This a regexp to match single shell arguments.
	;; Could someone please add comments explaining it?
	(sh-arg-re "\\(\\(?:\"\\(?:[^\"]\\|\\\\\"\\)+\"\\|'[^']+'\\|[^\"' \t\n]\\)+\\)")
	(grep-default (or (car grep-history) grep-command)))
    ;; In the default command, find the arg that specifies the pattern.
    (when (or (string-match
	       (concat "[^ ]+\\s +\\(?:-[^ ]+\\s +\\)*"
		       sh-arg-re "\\(\\s +\\(\\S +\\)\\)?")
	       grep-default)
	      ;; If the string is not yet complete.
	      (string-match "\\(\\)\\'" grep-default))
      ;; Maybe we will replace the pattern with the default tag.
      ;; But first, maybe replace the file name pattern.
      (condition-case nil
	  (unless (or (not (stringp buffer-file-name))
		      (when (match-beginning 2)
			(save-match-data
			  (string-match
			   (wildcard-to-regexp
			    (file-name-nondirectory
			     (match-string 3 grep-default)))
			   (file-name-nondirectory buffer-file-name)))))
	    (setq grep-default (concat (substring grep-default
						  0 (match-beginning 2))
				       " *."
				       (file-name-extension buffer-file-name))))
	;; In case wildcard-to-regexp gets an error
	;; from invalid data.
	(error nil))
      ;; Now replace the pattern with the default tag.
      (replace-match tag-default t t grep-default 1))))


;;;###autoload
(define-compilation-mode grep-mode "Grep"
  "Sets `grep-last-buffer' and `compilation-window-height'."
  (setq grep-last-buffer (current-buffer))
  (set (make-local-variable 'tool-bar-map) grep-mode-tool-bar-map)
  (set (make-local-variable 'compilation-error-face)
       grep-hit-face)
  (set (make-local-variable 'compilation-error-regexp-alist)
       grep-regexp-alist)
  ;; compilation-directory-matcher can't be nil, so we set it to a regexp that
  ;; can never match.
  (set (make-local-variable 'compilation-directory-matcher) '("\\`a\\`"))
  (set (make-local-variable 'compilation-process-setup-function)
       'grep-process-setup)
  (set (make-local-variable 'compilation-disable-input) t)
  (set (make-local-variable 'compilation-error-screen-columns)
       grep-error-screen-columns)
  (add-hook 'compilation-filter-hook 'grep-filter nil t))


;;;###autoload
(defun grep (command-args)
  "Run grep, with user-specified args, and collect output in a buffer.
While grep runs asynchronously, you can use \\[next-error] (M-x next-error),
or \\<grep-mode-map>\\[compile-goto-error] in the grep \
output buffer, to go to the lines where grep
found matches.

For doing a recursive `grep', see the `rgrep' command.  For running
`grep' in a specific directory, see `lgrep'.

This command uses a special history list for its COMMAND-ARGS, so you
can easily repeat a grep command.

A prefix argument says to default the argument based upon the current
tag the cursor is over, substituting it into the last grep command
in the grep command history (or into `grep-command' if that history
list is empty)."
  (interactive
   (progn
     (grep-compute-defaults)
     (let ((default (grep-default-command)))
       (list (read-shell-command "Run grep (like this): "
                                 (if current-prefix-arg default grep-command)
                                 'grep-history
                                 (if current-prefix-arg nil default))))))

  ;; Setting process-setup-function makes exit-message-function work
  ;; even when async processes aren't supported.
  (compilation-start (if (and grep-use-null-device null-device)
			 (concat command-args " " null-device)
		       command-args)
		     'grep-mode))


;;;###autoload
(defun grep-find (command-args)
  "Run grep via find, with user-specified args COMMAND-ARGS.
Collect output in a buffer.
While find runs asynchronously, you can use the \\[next-error] command
to find the text that grep hits refer to.

This command uses a special history list for its arguments, so you can
easily repeat a find command."
  (interactive
   (progn
     (grep-compute-defaults)
     (if grep-find-command
	 (list (read-shell-command "Run find (like this): "
                                   grep-find-command 'grep-find-history))
       ;; No default was set
       (read-string
        "compile.el: No `grep-find-command' command available. Press RET.")
       (list nil))))
  (when command-args
    (let ((null-device nil))		; see grep
      (grep command-args))))

;;;###autoload
(defalias 'find-grep 'grep-find)


;; User-friendly interactive API.

(defconst grep-expand-keywords
  '(("<C>" . (and cf (isearch-no-upper-case-p regexp t) "-i"))
    ("<D>" . dir)
    ("<F>" . files)
    ("<N>" . null-device)
    ("<X>" . excl)
    ("<R>" . (shell-quote-argument (or regexp ""))))
  "List of substitutions performed by `grep-expand-template'.
If car of an element matches, the cdr is evalled in to get the
substitution string.  Note dynamic scoping of variables.")

(defun grep-expand-template (template &optional regexp files dir excl)
  "Patch grep COMMAND string replacing <C>, <D>, <F>, <R>, and <X>."
  (let ((command template)
	(cf case-fold-search)
	(case-fold-search nil))
    (dolist (kw grep-expand-keywords command)
      (if (string-match (car kw) command)
	  (setq command
		(replace-match
		 (or (if (symbolp (cdr kw))
			 (symbol-value (cdr kw))
		       (save-match-data (eval (cdr kw))))
		     "")
		 t t command))))))

(defun grep-read-regexp ()
  "Read regexp arg for interactive grep."
  (let ((default (grep-tag-default)))
    (read-string
     (concat "Search for"
	     (if (and default (> (length default) 0))
		 (format " (default \"%s\"): " default) ": "))
     nil 'grep-regexp-history default)))

(defun grep-read-files (regexp)
  "Read files arg for interactive grep."
  (let* ((bn (or (buffer-file-name)
		 (replace-regexp-in-string "<[0-9]+>\\'" "" (buffer-name))))
	 (fn (and bn
		  (stringp bn)
		  (file-name-nondirectory bn)))
	 (default-alias
	   (and fn
		(let ((aliases (remove (assoc "all" grep-files-aliases)
				       grep-files-aliases))
		      alias)
		  (while aliases
		    (setq alias (car aliases)
			  aliases (cdr aliases))
		    (if (string-match (mapconcat
				       'wildcard-to-regexp
				       (split-string (cdr alias) nil t)
				       "\\|")
				      fn)
			(setq aliases nil)
		      (setq alias nil)))
		  (cdr alias))))
	 (default-extension
	   (and fn
		(let ((ext (file-name-extension fn)))
		  (and ext (concat "*." ext)))))
	 (default
	   (or default-alias
	       default-extension
	       (car grep-files-history)
	       (car (car grep-files-aliases))))
	 (files (completing-read
		 (concat "Search for \"" regexp
			 "\" in files"
			 (if default (concat " (default " default ")"))
			 ": ")
		 'read-file-name-internal
		 nil nil nil 'grep-files-history
		 (delete-dups
		  (delq nil (append (list default default-alias default-extension)
				    (mapcar 'car grep-files-aliases)))))))
    (and files
	 (or (cdr (assoc files grep-files-aliases))
	     files))))

;;;###autoload
(defun lgrep (regexp &optional files dir confirm)
  "Run grep, searching for REGEXP in FILES in directory DIR.
The search is limited to file names matching shell pattern FILES.
FILES may use abbreviations defined in `grep-files-aliases', e.g.
entering `ch' is equivalent to `*.[ch]'.

With \\[universal-argument] prefix, you can edit the constructed shell command line
before it is executed.
With two \\[universal-argument] prefixes, directly edit and run `grep-command'.

Collect output in a buffer.  While grep runs asynchronously, you
can use \\[next-error] (M-x next-error), or \\<grep-mode-map>\\[compile-goto-error] \
in the grep output buffer,
to go to the lines where grep found matches.

This command shares argument histories with \\[rgrep] and \\[grep]."
  (interactive
   (progn
     (grep-compute-defaults)
     (cond
      ((and grep-command (equal current-prefix-arg '(16)))
       (list (read-from-minibuffer "Run: " grep-command
				   nil nil 'grep-history)))
      ((not grep-template)
       (error "grep.el: No `grep-template' available"))
      (t (let* ((regexp (grep-read-regexp))
		(files (grep-read-files regexp))
		(dir (read-directory-name "In directory: "
					  nil default-directory t))
		(confirm (equal current-prefix-arg '(4))))
	   (list regexp files dir confirm))))))
  (when (and (stringp regexp) (> (length regexp) 0))
    (unless (and dir (file-directory-p dir) (file-readable-p dir))
      (setq dir default-directory))
    (let ((command regexp))
      (if (null files)
	  (if (string= command grep-command)
	      (setq command nil))
	(setq dir (file-name-as-directory (expand-file-name dir)))
	(setq command (grep-expand-template
		       grep-template
		       regexp
		       files
		       nil
		       (and grep-find-ignored-files
			    (concat " --exclude="
				    (mapconcat
				     #'(lambda (ignore)
					 (cond ((stringp ignore)
						(shell-quote-argument ignore))
					       ((consp ignore)
						(and (funcall (car ignore) dir)
						     (shell-quote-argument
						      (cdr ignore))))))
				     grep-find-ignored-files
				     " --exclude=")))))
	(when command
	  (if confirm
	      (setq command
		    (read-from-minibuffer "Confirm: "
					  command nil nil 'grep-history))
	    (add-to-history 'grep-history command))))
      (when command
	(let ((default-directory dir))
	  ;; Setting process-setup-function makes exit-message-function work
	  ;; even when async processes aren't supported.
	  (compilation-start (if (and grep-use-null-device null-device)
				 (concat command " " null-device)
			       command)
			     'grep-mode))
	(if (eq next-error-last-buffer (current-buffer))
	    (setq default-directory dir))))))


(defvar find-name-arg)	    ; not autoloaded but defined in find-dired

;;;###autoload
(defun rgrep (regexp &optional files dir confirm)
  "Recursively grep for REGEXP in FILES in directory tree rooted at DIR.
The search is limited to file names matching shell pattern FILES.
FILES may use abbreviations defined in `grep-files-aliases', e.g.
entering `ch' is equivalent to `*.[ch]'.

With \\[universal-argument] prefix, you can edit the constructed shell command line
before it is executed.
With two \\[universal-argument] prefixes, directly edit and run `grep-find-command'.

Collect output in a buffer.  While find runs asynchronously, you
can use \\[next-error] (M-x next-error), or \\<grep-mode-map>\\[compile-goto-error] \
in the grep output buffer,
to go to the lines where grep found matches.

This command shares argument histories with \\[lgrep] and \\[grep-find]."
  (interactive
   (progn
     (grep-compute-defaults)
     (cond
      ((and grep-find-command (equal current-prefix-arg '(16)))
       (list (read-from-minibuffer "Run: " grep-find-command
				   nil nil 'grep-find-history)))
      ((not grep-find-template)
       (error "grep.el: No `grep-find-template' available"))
      (t (let* ((regexp (grep-read-regexp))
		(files (grep-read-files regexp))
		(dir (read-directory-name "Base directory: "
					  nil default-directory t))
		(confirm (equal current-prefix-arg '(4))))
	   (list regexp files dir confirm))))))
  (when (and (stringp regexp) (> (length regexp) 0))
    (unless (and dir (file-directory-p dir) (file-readable-p dir))
      (setq dir default-directory))
    (if (null files)
	(if (not (string= regexp (if (consp grep-find-command)
				     (car grep-find-command)
				   grep-find-command)))
	    (compilation-start regexp 'grep-mode))
      (setq dir (file-name-as-directory (expand-file-name dir)))
      (require 'find-dired)		; for `find-name-arg'
      (let ((command (grep-expand-template
		      grep-find-template
		      regexp
		      (concat (shell-quote-argument "(")
			      " " find-name-arg " "
			      (mapconcat #'shell-quote-argument
					 (split-string files)
					 (concat " -o " find-name-arg " "))
			      " "
			      (shell-quote-argument ")"))
		      dir
		      (concat
		       (and grep-find-ignored-directories
			    (concat "-type d "
				    (shell-quote-argument "(")
				    ;; we should use shell-quote-argument here
				    " -path "
				    (mapconcat
				     #'(lambda (ignore)
					 (cond ((stringp ignore)
						(shell-quote-argument
						 (concat "*/" ignore)))
					       ((consp ignore)
						(and (funcall (car ignore) dir)
						     (shell-quote-argument
						      (concat "*/"
							      (cdr ignore)))))))
				     grep-find-ignored-directories
				     " -o -path ")
				    " "
				    (shell-quote-argument ")")
				    " -prune -o "))
		       (and grep-find-ignored-files
			    (concat (shell-quote-argument "(")
				    ;; we should use shell-quote-argument here
				    " -name "
				    (mapconcat
				     #'(lambda (ignore)
					 (cond ((stringp ignore)
						(shell-quote-argument ignore))
					       ((consp ignore)
						(and (funcall (car ignore) dir)
						     (shell-quote-argument
						      (cdr ignore))))))
				     grep-find-ignored-files
				     " -o -name ")
				    " "
				    (shell-quote-argument ")")
				    " -prune -o "))))))
	(when command
	  (if confirm
	      (setq command
		    (read-from-minibuffer "Confirm: "
					  command nil nil 'grep-find-history))
	    (add-to-history 'grep-find-history command))
	  (let ((default-directory dir))
	    (compilation-start command 'grep-mode))
	  ;; Set default-directory if we started rgrep in the *grep* buffer.
	  (if (eq next-error-last-buffer (current-buffer))
	      (setq default-directory dir)))))))

;;;###autoload
(defun zrgrep (regexp &optional files dir confirm grep-find-template)
  "Recursively grep for REGEXP in gzipped FILES in tree rooted at DIR.
Like `rgrep' but uses `zgrep' for `grep-program', sets the default
file name to `*.gz', and sets `grep-highlight-matches' to `always'."
  (interactive
   (progn
     ;; Compute standard default values.
     (grep-compute-defaults)
     ;; Compute the default zrgrep command by running `grep-compute-defaults'
     ;; for grep program "zgrep", but not changing global values.
     (let ((grep-program "zgrep")
	   ;; Don't change global values for variables computed
	   ;; by `grep-compute-defaults'.
	   (grep-find-template nil)
	   (grep-find-command nil)
	   (grep-host-defaults-alist nil)
	   ;; Use for `grep-read-files'
	   (grep-files-aliases '(("all" . "* .*")
				 ("gz"  . "*.gz"))))
       ;; Recompute defaults using let-bound values above.
       (grep-compute-defaults)
       (cond
	((and grep-find-command (equal current-prefix-arg '(16)))
	 (list (read-from-minibuffer "Run: " grep-find-command
				     nil nil 'grep-find-history)))
	((not grep-find-template)
	 (error "grep.el: No `grep-find-template' available"))
	(t (let* ((regexp (grep-read-regexp))
		  (files (grep-read-files regexp))
		  (dir (read-directory-name "Base directory: "
					    nil default-directory t))
		  (confirm (equal current-prefix-arg '(4))))
	     (list regexp files dir confirm grep-find-template)))))))
  ;; Set `grep-highlight-matches' to `always'
  ;; since `zgrep' puts filters in the grep output.
  (let ((grep-highlight-matches 'always))
    ;; `rgrep' uses the dynamically bound value `grep-find-template'
    ;; from the argument `grep-find-template' whose value is computed
    ;; in the `interactive' spec.
    (rgrep regexp files dir confirm)))

;;;###autoload
(defalias 'rzgrep 'zrgrep)

(provide 'grep)

;;; grep.el ends here