unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
blob e4c6a38a77e39d7a3525d77d43e9073781646c0c 47933 bytes (raw)
name: lisp/progmodes/flymake.el 	 # note: path name is non-authoritative(*)

   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
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
 
;;; flymake.el --- A universal on-the-fly syntax checker  -*- lexical-binding: t; -*-

;; Copyright (C) 2003-2017 Free Software Foundation, Inc.

;; Author:  Pavel Kobyakov <pk_at_work@yahoo.com>
;; Maintainer: Leo Liu <sdl.web@gmail.com>
;; Version: 0.3
;; Keywords: c languages tools

;; 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:
;;
;; Flymake is a minor Emacs mode performing on-the-fly syntax checks.
;;
;; Flymake collects diagnostic information for multiple sources,
;; called backends, and visually annotates the relevant portions in
;; the buffer.
;;
;; This file contains the UI for displaying and interacting with the
;; results produced by these backends, as well as entry points for
;; backends to hook on to.
;;
;; The main entry points are `flymake-mode' and `flymake-start'
;;
;; The docstrings of these variables are relevant to understanding how
;; Flymake works for both the user and the backend programmer:
;;
;; * `flymake-diagnostic-functions'
;; * `flymake-diagnostic-types-alist'
;;
;;; Code:

(require 'cl-lib)
(require 'thingatpt) ; end-of-thing
(require 'warnings) ; warning-numeric-level, display-warning
(require 'compile) ; for some faces
(require 'subr-x) ; when-let*, if-let*, hash-table-keys, hash-table-values

(defgroup flymake nil
  "Universal on-the-fly syntax checker."
  :version "23.1"
  :link '(custom-manual "(flymake) Top")
  :group 'tools)

(defcustom flymake-error-bitmap '(flymake-double-exclamation-mark
                                  compilation-error)
  "Bitmap (a symbol) used in the fringe for indicating errors.
The value may also be a list of two elements where the second
element specifies the face for the bitmap.  For possible bitmap
symbols, see `fringe-bitmaps'.  See also `flymake-warning-bitmap'.

The option `flymake-fringe-indicator-position' controls how and where
this is used."
  :version "24.3"
  :type '(choice (symbol :tag "Bitmap")
                 (list :tag "Bitmap and face"
                       (symbol :tag "Bitmap")
                       (face :tag "Face"))))

(defcustom flymake-warning-bitmap '(exclamation-mark compilation-warning)
  "Bitmap (a symbol) used in the fringe for indicating warnings.
The value may also be a list of two elements where the second
element specifies the face for the bitmap.  For possible bitmap
symbols, see `fringe-bitmaps'.  See also `flymake-error-bitmap'.

The option `flymake-fringe-indicator-position' controls how and where
this is used."
  :version "24.3"
  :type '(choice (symbol :tag "Bitmap")
                 (list :tag "Bitmap and face"
                       (symbol :tag "Bitmap")
                       (face :tag "Face"))))

(defcustom flymake-note-bitmap '(exclamation-mark compilation-info)
  "Bitmap (a symbol) used in the fringe for indicating info notes.
The value may also be a list of two elements where the second
element specifies the face for the bitmap.  For possible bitmap
symbols, see `fringe-bitmaps'.  See also `flymake-error-bitmap'.

The option `flymake-fringe-indicator-position' controls how and where
this is used."
  :version "26.1"
  :type '(choice (symbol :tag "Bitmap")
                 (list :tag "Bitmap and face"
                       (symbol :tag "Bitmap")
                       (face :tag "Face"))))

(defcustom flymake-fringe-indicator-position 'left-fringe
  "The position to put Flymake fringe indicator.
The value can be nil (do not use indicators), `left-fringe' or `right-fringe'.
See `flymake-error-bitmap' and `flymake-warning-bitmap'."
  :version "24.3"
  :type '(choice (const left-fringe)
		 (const right-fringe)
		 (const :tag "No fringe indicators" nil)))

(defcustom flymake-start-syntax-check-on-newline t
  "Start syntax check if newline char was added/removed from the buffer."
  :type 'boolean)

(defcustom flymake-no-changes-timeout 0.5
  "Time to wait after last change before automatically checking buffer.
If nil, never start checking buffer automatically like this."
  :type 'number)

(defcustom flymake-gui-warnings-enabled t
  "Enables/disables GUI warnings."
  :type 'boolean)
(make-obsolete-variable 'flymake-gui-warnings-enabled
			"it no longer has any effect." "26.1")

(defcustom flymake-start-on-flymake-mode t
  "Start syntax check when `flymake-mode'is enabled.
Specifically, start it when the buffer is actually displayed."
  :type 'boolean)

(define-obsolete-variable-alias 'flymake-start-syntax-check-on-find-file
  'flymake-start-on-flymake-mode "26.1")

(defcustom flymake-log-level -1
  "Obsolete and ignored variable."
  :type 'integer)
(make-obsolete-variable 'flymake-log-level
			"it is superseded by `warning-minimum-log-level.'"
                        "26.1")

(defcustom flymake-wrap-around t
  "If non-nil, moving to errors wraps around buffer boundaries."
  :type 'boolean)

(when (fboundp 'define-fringe-bitmap)
  (define-fringe-bitmap 'flymake-double-exclamation-mark
    (vector #b00000000
            #b00000000
            #b00000000
            #b00000000
            #b01100110
            #b01100110
            #b01100110
            #b01100110
            #b01100110
            #b01100110
            #b01100110
            #b01100110
            #b00000000
            #b01100110
            #b00000000
            #b00000000
            #b00000000)))

(defvar-local flymake-timer nil
  "Timer for starting syntax check.")

(defvar-local flymake-check-start-time nil
  "Time at which syntax check was started.")

(defun flymake--log-1 (level sublog msg &rest args)
  "Do actual work for `flymake-log'."
  (let (;; never popup the log buffer
        (warning-minimum-level :emergency)
        (warning-type-format
         (format " [%s %s]"
                 (or sublog 'flymake)
                 (current-buffer))))
    (display-warning (list 'flymake sublog)
                     (apply #'format-message msg args)
                     (if (numberp level)
                         (or (nth level
                                  '(:emergency :error :warning :debug :debug) )
                             :error)
                       level)
                     "*Flymake log*")))

(defun flymake-switch-to-log-buffer ()
  "Go to the *Flymake log* buffer."
  (interactive)
  (switch-to-buffer "*Flymake log*"))

;;;###autoload
(defmacro flymake-log (level msg &rest args)
  "Log, at level LEVEL, the message MSG formatted with ARGS.
LEVEL is passed to `display-warning', which is used to display
the warning.  If this form is included in a byte-compiled file,
the generated warning contains an indication of the file that
generated it."
  (let* ((compile-file (and (boundp 'byte-compile-current-file)
                            (symbol-value 'byte-compile-current-file)))
         (sublog (if (and
                      compile-file
                      (not load-file-name))
                     (intern
                      (file-name-nondirectory
                       (file-name-sans-extension compile-file))))))
    `(flymake--log-1 ,level ',sublog ,msg ,@args)))

(defun flymake-error (text &rest args)
  "Format TEXT with ARGS and signal an error for Flymake."
  (let ((msg (apply #'format-message text args)))
    (flymake-log :error msg)
    (error (concat "[Flymake] " msg))))

(cl-defstruct (flymake--diag
               (:constructor flymake--diag-make))
  buffer beg end type text backend)

;;;###autoload
(defun flymake-make-diagnostic (buffer
                                beg
                                end
                                type
                                text)
  "Make a Flymake diagnostic for BUFFER's region from BEG to END.
TYPE is a key to `flymake-diagnostic-types-alist' and TEXT is a
description of the problem detected in this region."
  (flymake--diag-make :buffer buffer :beg beg :end end :type type :text text))

(cl-defun flymake--overlays (&key beg end filter compare key)
  "Get flymake-related overlays.
If BEG is non-nil and END is nil, consider only `overlays-at'
BEG. Otherwise consider `overlays-in' the region comprised by BEG
and END, defaulting to the whole buffer.  Remove all that do not
verify FILTER, a function, and sort them by COMPARE (using KEY)."
  (save-restriction
    (widen)
    (let ((ovs (cl-remove-if-not
                (lambda (ov)
                  (and (overlay-get ov 'flymake)
                       (or (not filter)
                           (funcall filter ov))))
                (if (and beg (null end))
                    (overlays-at beg t)
                  (overlays-in (or beg (point-min))
                               (or end (point-max)))))))
      (if compare
          (cl-sort ovs compare :key (or key
                                        #'identity))
        ovs))))

(defun flymake-delete-own-overlays (&optional filter)
  "Delete all Flymake overlays in BUFFER."
  (mapc #'delete-overlay (flymake--overlays :filter filter)))

(defface flymake-error
  '((((supports :underline (:style wave)))
     :underline (:style wave :color "Red1"))
    (t
     :inherit error))
  "Face used for marking error regions."
  :version "24.4")

(defface flymake-warning
  '((((supports :underline (:style wave)))
     :underline (:style wave :color "deep sky blue"))
    (t
     :inherit warning))
  "Face used for marking warning regions."
  :version "24.4")

(defface flymake-note
  '((((supports :underline (:style wave)))
     :underline (:style wave :color "yellow green"))
    (t
     :inherit warning))
  "Face used for marking note regions."
  :version "26.1")

(define-obsolete-face-alias 'flymake-warnline 'flymake-warning "26.1")
(define-obsolete-face-alias 'flymake-errline 'flymake-error "26.1")

;;;###autoload
(defun flymake-diag-region (buffer line &optional col)
  "Compute BUFFER's region (BEG . END) corresponding to LINE and COL.
If COL is nil, return a region just for LINE.  Return nil if the
region is invalid."
  (condition-case-unless-debug _err
      (with-current-buffer buffer
        (let ((line (min (max line 1)
                         (line-number-at-pos (point-max) 'absolute))))
          (save-excursion
            (goto-char (point-min))
            (forward-line (1- line))
            (cl-flet ((fallback-bol
                       () (progn (back-to-indentation) (point)))
                      (fallback-eol
                       (beg)
                       (progn
                         (end-of-line)
                         (skip-chars-backward " \t\f\t\n" beg)
                         (if (eq (point) beg)
                             (line-beginning-position 2)
                           (point)))))
              (if (and col (cl-plusp col))
                  (let* ((beg (progn (forward-char (1- col))
                                     (point)))
                         (sexp-end (ignore-errors (end-of-thing 'sexp)))
                         (end (or (and sexp-end
                                       (not (= sexp-end beg))
                                       sexp-end)
                                  (ignore-errors (goto-char (1+ beg)))))
                         (safe-end (or end
                                       (fallback-eol beg))))
                    (cons (if end beg (fallback-bol))
                          safe-end))
                (let* ((beg (fallback-bol))
                       (end (fallback-eol beg)))
                  (cons beg end)))))))
    (error (flymake-error "Invalid region line=%s col=%s" line col))))

(defvar flymake-diagnostic-functions nil
  "Special hook of Flymake backends that check a buffer.

The functions in this hook diagnose problems in a buffer's
contents and provide information to the Flymake user interface
about where and how to annotate problems diagnosed in a buffer.

Each backend function must be prepared to accept an arbitrary
number of arguments:

* the first argument is always REPORT-FN, a callback function
  detailed below;

* the remaining arguments are keyword-value pairs in the
  form (:KEY VALUE :KEY2 VALUE2...).  Currently, Flymake provides
  no such arguments, but backend functions must be prepared to
  accept and possibly ignore any number of them.

Whenever Flymake or the user decides to re-check the buffer,
backend functions are called as detailed above and are expected
to initiate this check, but aren't required to complete it before
exiting: if the computation involved is expensive, especially for
large buffers, that task can be scheduled for the future using
asynchronous processes or other asynchronous mechanisms.

In any case, backend functions are expected to return quickly or
signal an error, in which case the backend is disabled.  Flymake
will not try disabled backends again for any future checks of
this buffer.  Certain commands, like turning `flymake-mode' off
and on again, reset the list of disabled backends.

If the function returns, Flymake considers the backend to be
\"running\". If it has not done so already, the backend is
expected to call the function REPORT-FN with a single argument
REPORT-ACTION also followed by an optional list of keyword-value
pairs in the form (:REPORT-KEY VALUE :REPORT-KEY2 VALUE2...).

Currently accepted values for REPORT-ACTION are:

* A (possibly empty) list of diagnostic objects created with
  `flymake-make-diagnostic', causing Flymake to annotate the
  buffer with this information.

  A backend may call REPORT-FN repeatedly in this manner, but
  only until Flymake considers that the most recently requested
  buffer check is now obsolete because, say, buffer contents have
  changed in the meantime. The backend is only given notice of
  this via a renewed call to the backend function. Thus, to
  prevent making obsolete reports and wasting resources, backend
  functions should first cancel any ongoing processing from
  previous calls.

* The symbol `:panic', signaling that the backend has encountered
  an exceptional situation and should be disabled.

Currently accepted REPORT-KEY arguments are:

* `:explanation' value should give user-readable details of
  the situation encountered, if any.

* `:force': value should be a boolean suggesting that Flymake
  consider the report even if it was somehow unexpected.")

(defvar flymake-diagnostic-types-alist
  `((:error
     . ((flymake-category . flymake-error)))
    (:warning
     . ((flymake-category . flymake-warning)))
    (:note
     . ((flymake-category . flymake-note))))
  "Alist ((KEY . PROPS)*) of properties of Flymake diagnostic types.
KEY designates a kind of diagnostic can be anything passed as
`:type' to `flymake-make-diagnostic'.

PROPS is an alist of properties that are applied, in order, to
the diagnostics of the type designated by KEY.  The recognized
properties are:

* Every property pertaining to overlays, except `category' and
  `evaporate' (see Info Node `(elisp)Overlay Properties'), used
  to affect the appearance of Flymake annotations.

* `bitmap', an image displayed in the fringe according to
  `flymake-fringe-indicator-position'.  The value actually
  follows the syntax of `flymake-error-bitmap' (which see).  It
  is overridden by any `before-string' overlay property.

* `severity', a non-negative integer specifying the diagnostic's
  severity.  The higher, the more serious.  If the overlay
  property `priority' is not specified, `severity' is used to set
  it and help sort overlapping overlays.

* `flymake-category', a symbol whose property list is considered
  a default for missing values of any other properties.  This is
  useful to backend authors when creating new diagnostic types
  that differ from an existing type by only a few properties.")

(put 'flymake-error 'face 'flymake-error)
(put 'flymake-error 'bitmap 'flymake-error-bitmap)
(put 'flymake-error 'severity (warning-numeric-level :error))
(put 'flymake-error 'mode-line-face 'compilation-error)

(put 'flymake-warning 'face 'flymake-warning)
(put 'flymake-warning 'bitmap 'flymake-warning-bitmap)
(put 'flymake-warning 'severity (warning-numeric-level :warning))
(put 'flymake-warning 'mode-line-face 'compilation-warning)

(put 'flymake-note 'face 'flymake-note)
(put 'flymake-note 'bitmap 'flymake-note-bitmap)
(put 'flymake-note 'severity (warning-numeric-level :debug))
(put 'flymake-note 'mode-line-face 'compilation-info)

(defun flymake--lookup-type-property (type prop &optional default)
  "Look up PROP for TYPE in `flymake-diagnostic-types-alist'.
If TYPE doesn't declare PROP in either
`flymake-diagnostic-types-alist' or in the symbol of its
associated `flymake-category' return DEFAULT."
  (let ((alist-probe (assoc type flymake-diagnostic-types-alist)))
    (cond (alist-probe
           (let* ((alist (cdr alist-probe))
                  (prop-probe (assoc prop alist)))
             (if prop-probe
                 (cdr prop-probe)
               (if-let* ((cat (assoc-default 'flymake-category alist))
                         (plist (and (symbolp cat)
                                     (symbol-plist cat)))
                         (cat-probe (plist-member plist prop)))
                   (cadr cat-probe)
                 default))))
          (t
           default))))

(defun flymake--fringe-overlay-spec (bitmap &optional recursed)
  (if (and (symbolp bitmap)
           (boundp bitmap)
           (not recursed))
      (flymake--fringe-overlay-spec
       (symbol-value bitmap) t)
    (and flymake-fringe-indicator-position
         bitmap
         (propertize "!" 'display
                     (cons flymake-fringe-indicator-position
                           (if (listp bitmap)
                               bitmap
                             (list bitmap)))))))

(defun flymake--highlight-line (diagnostic)
  "Highlight buffer with info in DIAGNOSTIC."
  (when-let* ((ov (make-overlay
                   (flymake--diag-beg diagnostic)
                   (flymake--diag-end diagnostic))))
    ;; First set `category' in the overlay, then copy over every other
    ;; property.
    ;;
    (let ((alist (assoc-default (flymake--diag-type diagnostic)
                                flymake-diagnostic-types-alist)))
      (overlay-put ov 'category (assoc-default 'flymake-category alist))
      (cl-loop for (k . v) in alist
               unless (eq k 'category)
               do (overlay-put ov k v)))
    ;; Now ensure some essential defaults are set
    ;;
    (cl-flet ((default-maybe
                (prop value)
                (unless (or (plist-member (overlay-properties ov) prop)
                            (let ((cat (overlay-get ov
                                                    'flymake-category)))
                              (and cat
                                   (plist-member (symbol-plist cat) prop))))
                  (overlay-put ov prop value))))
      (default-maybe 'bitmap 'flymake-error-bitmap)
      (default-maybe 'face 'flymake-error)
      (default-maybe 'before-string
        (flymake--fringe-overlay-spec
         (overlay-get ov 'bitmap)))
      (default-maybe 'help-echo
        (lambda (_window _ov pos)
          (mapconcat
           (lambda (ov)
             (overlay-get ov 'flymake-text))
           (flymake--overlays :beg pos)
           "\n")))
      (default-maybe 'severity (warning-numeric-level :error))
      (default-maybe 'priority (+ 100 (overlay-get ov 'severity))))
    ;; Some properties can't be overridden.
    ;;
    (overlay-put ov 'evaporate t)
    (overlay-put ov 'flymake t)
    (overlay-put ov 'flymake-text (flymake--diag-text diagnostic))
    (overlay-put ov 'flymake--diagnostic diagnostic)))

;; Nothing in Flymake uses this at all any more, so this is just for
;; third-party compatibility.
(define-obsolete-function-alias 'flymake-display-warning 'message-box "26.1")

(defvar-local flymake--backend-state nil
  "Buffer-local hash table of a Flymake backend's state.
The keys to this hash table are functions as found in
`flymake-diagnostic-functions'. The values are structures
of the type `flymake--backend-state', with these slots:

`running', a symbol to keep track of a backend's replies via its
REPORT-FN argument. A backend is running if this key is
present. If nil, Flymake isn't expecting any replies from the
backend.

`diags', a (possibly empty) list of recent diagnostic objects
created by the backend with `flymake-make-diagnostic'.

`reported-p', a boolean indicating if the backend has replied
since it last was contacted.

`disabled', a string with the explanation for a previous
exceptional situation reported by the backend, nil if the
backend is operating normally.")

(cl-defstruct (flymake--backend-state
               (:constructor flymake--make-backend-state))
  running reported-p disabled diags)

(defmacro flymake--with-backend-state (backend state-var &rest body)
  "Bind BACKEND's STATE-VAR to its state, run BODY."
  (declare (indent 2) (debug (sexp sexp &rest form)))
  (let ((b (make-symbol "b")))
    `(let* ((,b ,backend)
            (,state-var
             (or (gethash ,b flymake--backend-state)
                 (puthash ,b (flymake--make-backend-state)
                          flymake--backend-state))))
       ,@body)))

(defun flymake-is-running ()
  "Tell if Flymake has running backends in this buffer"
  (flymake-running-backends))

(cl-defun flymake--handle-report (backend token report-action
                                          &key explanation force
                                          &allow-other-keys)
  "Handle reports from BACKEND identified by TOKEN.
BACKEND, REPORT-ACTION and EXPLANATION, and FORCE conform to the calling
convention described in `flymake-diagnostic-functions' (which
see). Optional FORCE says to handle a report even if TOKEN was
not expected."
  (let* ((state (gethash backend flymake--backend-state))
         (first-report (not (flymake--backend-state-reported-p state))))
    (setf (flymake--backend-state-reported-p state) t)
    (let (expected-token
          new-diags)
      (cond
       ((null state)
        (flymake-error
         "Unexpected report from unknown backend %s" backend))
       ((flymake--backend-state-disabled state)
        (flymake-error
         "Unexpected report from disabled backend %s" backend))
       ((progn
          (setq expected-token (flymake--backend-state-running state))
          (null expected-token))
        ;; should never happen
        (flymake-error "Unexpected report from stopped backend %s" backend))
       ((and (not (eq expected-token token))
             (not force))
        (flymake-error "Obsolete report from backend %s with explanation %s"
                       backend explanation))
       ((eq :panic report-action)
        (flymake--disable-backend backend explanation))
       ((not (listp report-action))
        (flymake--disable-backend backend
                                  (format "Unknown action %S" report-action))
        (flymake-error "Expected report, but got unknown key %s" report-action))
       (t
        (setq new-diags report-action)
        (save-restriction
          (widen)
          ;; only delete overlays if this is the first report
          (when first-report
            (flymake-delete-own-overlays
             (lambda (ov)
               (eq backend
                   (flymake--diag-backend
                    (overlay-get ov 'flymake--diagnostic))))))
          (mapc (lambda (diag)
                  (flymake--highlight-line diag)
                  (setf (flymake--diag-backend diag) backend))
                new-diags)
          (setf (flymake--backend-state-diags state)
                (append new-diags (flymake--backend-state-diags state)))
          (when flymake-check-start-time
            (flymake-log :debug "backend %s reported %d diagnostics in %.2f second(s)"
                         backend
                         (length new-diags)
                         (- (float-time) flymake-check-start-time)))
          (when (and (get-buffer (flymake--diagnostics-buffer-name))
                     (get-buffer-window (flymake--diagnostics-buffer-name))
                     (null (cl-set-difference (flymake-running-backends)
                                              (flymake-reporting-backends))))
            (flymake-show-diagnostics-buffer))))))))

(defun flymake-make-report-fn (backend &optional token)
  "Make a suitable anonymous report function for BACKEND.
BACKEND is used to help Flymake distinguish different diagnostic
sources.  If provided, TOKEN helps Flymake distinguish between
different runs of the same backend."
  (let ((buffer (current-buffer)))
    (lambda (&rest args)
      (when (buffer-live-p buffer)
        (with-current-buffer buffer
          (apply #'flymake--handle-report backend token args))))))

(defun flymake--collect (fn &optional message-prefix)
  "Collect Flymake backends matching FN.
If MESSAGE-PREFIX, echo a message using that prefix"
  (unless flymake--backend-state
    (user-error "Flymake is not initialized"))
  (let (retval)
    (maphash (lambda (backend state)
               (when (funcall fn state) (push backend retval)))
             flymake--backend-state)
    (when message-prefix
      (message "%s%s"
               message-prefix
               (mapconcat (lambda (s) (format "%s" s))
                          retval ", ")))
    retval))

(defun flymake-running-backends ()
  "Compute running Flymake backends in current buffer."
  (interactive)
  (flymake--collect #'flymake--backend-state-running
                    (and (called-interactively-p 'interactive)
                         "Running backends: ")))

(defun flymake-disabled-backends ()
  "Compute disabled Flymake backends in current buffer."
  (interactive)
  (flymake--collect #'flymake--backend-state-disabled
                    (and (called-interactively-p 'interactive)
                         "Disabled backends: ")))

(defun flymake-reporting-backends ()
  "Compute reporting Flymake backends in current buffer."
  (interactive)
  (flymake--collect #'flymake--backend-state-reported-p
                    (and (called-interactively-p 'interactive)
                         "Reporting backends: ")))

(defun flymake--disable-backend (backend &optional explanation)
  "Disable BACKEND because EXPLANATION.
If it is running also stop it."
  (flymake-log :warning "Disabling backend %s because %s" backend explanation)
  (flymake--with-backend-state backend state
    (setf (flymake--backend-state-running state) nil
          (flymake--backend-state-disabled state) explanation
          (flymake--backend-state-reported-p state) t)))

(defun flymake--run-backend (backend)
  "Run the backend BACKEND, reenabling if necessary."
  (flymake-log :debug "Running backend %s" backend)
  (let ((run-token (cl-gensym "backend-token")))
    (flymake--with-backend-state backend state
      (setf (flymake--backend-state-running state) run-token
            (flymake--backend-state-disabled state) nil
            (flymake--backend-state-diags state) nil
            (flymake--backend-state-reported-p state) nil))
    ;; FIXME: Should use `condition-case-unless-debug' here, but don't
    ;; for two reasons: (1) that won't let me catch errors from inside
    ;; `ert-deftest' where `debug-on-error' appears to be always
    ;; t. (2) In cases where the user is debugging elisp somewhere
    ;; else, and using flymake, the presence of a frequently
    ;; misbehaving backend in the global hook (most likely the legacy
    ;; backend) will trigger an annoying backtrace.
    ;;
    (condition-case err
        (funcall backend
                 (flymake-make-report-fn backend run-token))
      (error
       (flymake--disable-backend backend err)))))

(defun flymake-start (&optional deferred force)
  "Start a syntax check for the current buffer.
DEFERRED is a list of symbols designating conditions to wait for
before actually starting the check.  If it is nil (the list is
empty), start it immediately, else defer the check to when those
conditions are met.  Currently recognized conditions are
`post-command', for waiting until the current command is over,
`on-display', for waiting until the buffer is actually displayed
in a window.  If DEFERRED is t, wait for all known conditions.

With optional FORCE run even disabled backends.

Interactively, with a prefix arg, FORCE is t."
  (interactive (list nil current-prefix-arg))
  (let ((deferred (if (eq t deferred)
                      '(post-command on-display)
                    deferred))
        (buffer (current-buffer)))
    (cl-labels
        ((start-post-command
          ()
          (remove-hook 'post-command-hook #'start-post-command
                       nil)
          (with-current-buffer buffer
            (flymake-start (remove 'post-command deferred) force)))
         (start-on-display
          ()
          (remove-hook 'window-configuration-change-hook #'start-on-display
                       'local)
          (flymake-start (remove 'on-display deferred) force)))
      (cond ((and (memq 'post-command deferred)
                  this-command)
             (add-hook 'post-command-hook
                       #'start-post-command
                       'append nil))
            ((and (memq 'on-display deferred)
                  (not (get-buffer-window (current-buffer))))
             (add-hook 'window-configuration-change-hook
                       #'start-on-display
                       'append 'local))
            (t
             (setq flymake-check-start-time (float-time))
             (run-hook-wrapped
              'flymake-diagnostic-functions
              (lambda (backend)
                (cond
                 ((and (not force)
                       (flymake--with-backend-state backend state
                         (flymake--backend-state-disabled state)))
                  (flymake-log :debug "Backend %s is disabled, not starting"
                               backend))
                 (t
                  (flymake--run-backend backend)))
                nil)))))))

(defvar flymake-mode-map
  (let ((map (make-sparse-keymap))) map)
  "Keymap for `flymake-mode'")

;;;###autoload
(define-minor-mode flymake-mode
  "Toggle Flymake mode on or off.
With a prefix argument ARG, enable Flymake mode if ARG is
positive, and disable it otherwise.  If called from Lisp, enable
the mode if ARG is omitted or nil, and toggle it if ARG is `toggle'.

Flymake is an Emacs minor mode for on-the-fly syntax checking.
Flymake collects diagnostic information from multiple sources,
called backends, and visually annotates the buffer with the
results.

Flymake performs these checks while the user is editing.  The
customization variables `flymake-start-on-flymake-mode',
`flymake-no-changes-timeout' and
`flymake-start-syntax-check-on-newline' determine the exact
circumstances whereupon Flymake decides to initiate a check of
the buffer.

The commands `flymake-goto-next-error' and
`flymake-goto-prev-error' can be used to navigate among Flymake
diagnostics annotated in the buffer.

The visual appearance of each type of diagnostic can be changed
in the variable `flymake-diagnostic-types-alist'.

Activation or deactivation of backends used by Flymake in each
buffer happens via the special hook
`flymake-diagnostic-functions'.

Some backends may take longer than others to respond or complete,
and some may decide to disable themselves if they are not
suitable for the current buffer. The commands
`flymake-running-backends', `flymake-disabled-backends' and
`flymake-reporting-backends' summarize the situation, as does the
special *Flymake log* buffer."  :group 'flymake :lighter
  flymake--mode-line-format :keymap flymake-mode-map
  (cond
   ;; Turning the mode ON.
   (flymake-mode
    (add-hook 'after-change-functions 'flymake-after-change-function nil t)
    (add-hook 'after-save-hook 'flymake-after-save-hook nil t)
    (add-hook 'kill-buffer-hook 'flymake-kill-buffer-hook nil t)

    (setq flymake--backend-state (make-hash-table))

    (when flymake-start-on-flymake-mode (flymake-start t)))

   ;; Turning the mode OFF.
   (t
    (remove-hook 'after-change-functions 'flymake-after-change-function t)
    (remove-hook 'after-save-hook 'flymake-after-save-hook t)
    (remove-hook 'kill-buffer-hook 'flymake-kill-buffer-hook t)
    ;;+(remove-hook 'find-file-hook (function flymake-find-file-hook) t)

    (flymake-delete-own-overlays)

    (when flymake-timer
      (cancel-timer flymake-timer)
      (setq flymake-timer nil)))))

(defun flymake--schedule-timer-maybe ()
  "(Re)schedule an idle timer for checking the buffer.
Do it only if `flymake-no-changes-timeout' is non-nil."
  (when flymake-timer (cancel-timer flymake-timer))
  (when flymake-no-changes-timeout
    (setq
     flymake-timer
     (run-with-idle-timer
      (seconds-to-time flymake-no-changes-timeout)
      nil
      (lambda (buffer)
        (when (buffer-live-p buffer)
          (with-current-buffer buffer
            (when (and flymake-mode
                       flymake-no-changes-timeout)
	      (flymake-log
               :debug "starting syntax check after idle for %s seconds"
               flymake-no-changes-timeout)
	      (flymake-start t))
            (setq flymake-timer nil))))
      (current-buffer)))))

;;;###autoload
(defun flymake-mode-on ()
  "Turn Flymake mode on."
  (flymake-mode 1))

;;;###autoload
(defun flymake-mode-off ()
  "Turn Flymake mode off."
  (flymake-mode 0))

(make-obsolete 'flymake-mode-on 'flymake-mode "26.1")
(make-obsolete 'flymake-mode-off 'flymake-mode "26.1")

(defun flymake-after-change-function (start stop _len)
  "Start syntax check for current buffer if it isn't already running."
  (let((new-text (buffer-substring start stop)))
    (when (and flymake-start-syntax-check-on-newline (equal new-text "\n"))
      (flymake-log :debug "starting syntax check as new-line has been seen")
      (flymake-start t))
    (flymake--schedule-timer-maybe)))

(defun flymake-after-save-hook ()
  (when flymake-mode
    (flymake-log :debug "starting syntax check as buffer was saved")
    (flymake-start t)))

(defun flymake-kill-buffer-hook ()
  (when flymake-timer
    (cancel-timer flymake-timer)
    (setq flymake-timer nil)))

(defun flymake-find-file-hook ()
  (unless (or flymake-mode
              (null flymake-diagnostic-functions))
    (flymake-mode)
    (flymake-log :warning "Turned on in `flymake-find-file-hook'")))

(defun flymake-goto-next-error (&optional n filter interactive)
  "Go to Nth next Flymake error in buffer matching FILTER.
Interactively, always move to the next error.  With a prefix arg,
skip any diagnostics with a severity less than `:warning'.

If `flymake-wrap-around' is non-nil and no more next errors,
resumes search from top.

FILTER is a list of diagnostic types found in
`flymake-diagnostic-types-alist', or nil, if no filter is to be
applied."
  ;; TODO: let filter be a number, a severity below which diags are
  ;; skipped.
  (interactive (list 1
                     (if current-prefix-arg
                         '(:error :warning))
                     t))
  (let* ((n (or n 1))
         (ovs (flymake--overlays :filter
                                 (lambda (ov)
                                   (let ((diag (overlay-get
                                                ov
                                                'flymake--diagnostic)))
                                     (and diag
                                          (or (not filter)
                                              (memq (flymake--diag-type diag)
                                                    filter)))))
                                 :compare (if (cl-plusp n) #'< #'>)
                                 :key #'overlay-start))
         (tail (cl-member-if (lambda (ov)
                               (if (cl-plusp n)
                                   (> (overlay-start ov)
                                      (point))
                                 (< (overlay-start ov)
                                    (point))))
                             ovs))
         (chain (if flymake-wrap-around
                    (if tail
                        (progn (setcdr (last tail) ovs) tail)
                      (and ovs (setcdr (last ovs) ovs)))
                  tail))
         (target (nth (1- n) chain)))
    (cond (target
           (goto-char (overlay-start target))
           (when interactive
             (message
              "%s"
              (funcall (overlay-get target 'help-echo)
                       nil nil (point)))))
          (interactive
           (user-error "No more Flymake errors%s"
                       (if filter
                           (format " of types %s" filter)
                         ""))))))

(defun flymake-goto-prev-error (&optional n filter interactive)
  "Go to Nth previous Flymake error in buffer matching FILTER.
Interactively, always move to the previous error.  With a prefix
arg, skip any diagnostics with a severity less than `:warning'.

If `flymake-wrap-around' is non-nil and no more previous errors,
resumes search from bottom.

FILTER is a list of diagnostic types found in
`flymake-diagnostic-types-alist', or nil, if no filter is to be
applied."
  (interactive (list 1 (if current-prefix-arg
                           '(:error :warning))
                     t))
  (flymake-goto-next-error (- (or n 1)) filter interactive))

\f
;;; Mode-line and menu
;;;
(easy-menu-define flymake-menu flymake-mode-map "Flymake"
  `("Flymake"
    [ "Go to next error"      flymake-goto-next-error t ]
    [ "Go to previous error"  flymake-goto-prev-error t ]
    [ "Check now"             flymake-start t ]
    [ "Go to log buffer"      flymake-switch-to-log-buffer t ]
    [ "Show error buffer"     flymake-show-diagnostics-buffer t ]
    "--"
    [ "Turn off Flymake"      flymake-mode t ]))

(defvar flymake--mode-line-format `(:eval (flymake--mode-line-format)))

(put 'flymake--mode-line-format 'risky-local-variable t)

(defun flymake--mode-line-format ()
  "Produce a pretty minor mode indicator."
  (let* ((known (hash-table-keys flymake--backend-state))
         (running (flymake-running-backends))
         (disabled (flymake-disabled-backends))
         (reported (flymake-reporting-backends))
         (diags-by-type (make-hash-table))
         (all-disabled (and disabled (null running)))
         (some-waiting (cl-set-difference running reported)))
    (maphash (lambda (_b state)
               (mapc (lambda (diag)
                       (push diag
                             (gethash (flymake--diag-type diag)
                                      diags-by-type)))
                     (flymake--backend-state-diags state)))
             flymake--backend-state)
    `((:propertize " Flymake"
                   mouse-face mode-line-highlight
                   help-echo
                   ,(concat (format "%s known backends\n" (length known))
                            (format "%s running\n" (length running))
                            (format "%s disabled\n" (length disabled))
                            "mouse-1: Display minor mode menu\n"
                            "mouse-2: Show help for minor mode")
                   keymap
                   ,(let ((map (make-sparse-keymap)))
                      (define-key map [mode-line down-mouse-1]
                        flymake-menu)
                      (define-key map [mode-line mouse-2]
                        (lambda ()
                          (interactive)
                          (describe-function 'flymake-mode)))
                      map))
      ,@(pcase-let ((`(,ind ,face ,explain)
                     (cond ((null known)
                            `("?" mode-line "No known backends"))
                           (some-waiting
                            `("Wait" compilation-mode-line-run
                              ,(format "Waiting for %s running backend(s)"
                                       (length some-waiting))))
                           (all-disabled
                            `("!" compilation-mode-line-run
                              "All backends disabled"))
                           (t
                            `(nil nil nil)))))
          (when ind
            `((":"
               (:propertize ,ind
                            face ,face
                            help-echo ,explain
                            keymap
                            ,(let ((map (make-sparse-keymap)))
                               (define-key map [mode-line mouse-1]
                                 'flymake-switch-to-log-buffer)
                               map))))))
      ,@(unless (or all-disabled
                    (null known))
          (cl-loop
           for (type . severity)
           in (cl-sort (mapcar (lambda (type)
                                 (cons type (flymake--lookup-type-property
                                             type
                                             'severity
                                             (warning-numeric-level :error))))
                               (cl-union (hash-table-keys diags-by-type)
                                         '(:error :warning)))
                       #'>
                       :key #'cdr)
           for diags = (gethash type diags-by-type)
           for face = (flymake--lookup-type-property type
                                                     'mode-line-face
                                                     'compilation-error)
           when (or diags
                    (>= severity (warning-numeric-level :warning)))
           collect `(:propertize
                     ,(format "%d" (length diags))
                     face ,face
                     mouse-face mode-line-highlight
                     keymap
                     ,(let ((map (make-sparse-keymap))
                            (type type))
                        (define-key map [mode-line mouse-4]
                          (lambda (event)
                            (interactive "e")
                            (with-selected-window (posn-window (event-start event))
                              (flymake-goto-prev-error 1 (list type) t))))
                        (define-key map [mode-line mouse-5]
                          (lambda (event)
                            (interactive "e")
                            (with-selected-window (posn-window (event-start event))
                              (flymake-goto-next-error 1 (list type) t))))
                        map)
                     help-echo
                     ,(concat (format "%s diagnostics of type %s\n"
                                      (propertize (format "%d"
                                                          (length diags))
                                                  'face face)
                                      (propertize (format "%s" type)
                                                  'face face))
                              "mouse-4/mouse-5: previous/next of this type\n"))
           into forms
           finally return
           `((:propertize "[")
             ,@(cl-loop for (a . rest) on forms by #'cdr
                        collect a when rest collect
                        '(:propertize " "))
             (:propertize "]")))))))

;;; Diagnostics buffer

(defvar-local flymake--diagnostics-buffer-source nil)

(defvar flymake-diagnostics-buffer-mode-map
  (let ((map (make-sparse-keymap)))
    (define-key map (kbd "RET") 'flymake-goto-diagnostic)
    (define-key map (kbd "SPC") 'flymake-show-diagnostic)
    map))

(defun flymake-show-diagnostic (pos &optional other-window)
  "Show location of diagnostic at POS."
  (interactive (list (point) t))
  (let* ((id (or (tabulated-list-get-id pos)
                 (user-error "Nothing at point")))
         (overlay (plist-get id :overlay)))
    (with-current-buffer (overlay-buffer overlay)
      (with-selected-window
          (display-buffer (current-buffer) other-window)
        (goto-char (overlay-start overlay))
        (pulse-momentary-highlight-region (overlay-start overlay)
                                          (overlay-end overlay)
                                          'highlight))
      (current-buffer))))

(defun flymake-goto-diagnostic (pos)
  "Show location of diagnostic at POS.
POS can be a buffer position or a button"
  (interactive "d")
  (pop-to-buffer
   (flymake-show-diagnostic (if (button-type pos) (button-start pos) pos))))

(defun flymake--diagnostics-buffer-entries ()
  (with-current-buffer flymake--diagnostics-buffer-source
    (cl-loop for ov in (flymake--overlays)
             for diag = (overlay-get ov
                                     'flymake--diagnostic)
             for (line . col) =
             (save-excursion
               (goto-char (overlay-start ov))
               (cons (line-number-at-pos)
                     (- (point)
                        (line-beginning-position))))
             for type = (flymake--diag-type diag)
             collect
             (list (list :overlay ov
                         :line line
                         :severity (flymake--lookup-type-property
                                    type
                                    'severity (warning-numeric-level :error)))
                   `[,(format "%s" line)
                     ,(format "%s" col)
                     ,(propertize (format "%s" type)
                                  'face (flymake--lookup-type-property
                                         type 'mode-line-face 'flymake-error))
                     (,(format "%s" (flymake--diag-text diag))
                      mouse-face highlight
                      help-echo "mouse-2: visit this diagnostic"
                      face nil
                      action flymake-goto-diagnostic
                      mouse-action flymake-goto-diagnostic)]))))

(define-derived-mode flymake-diagnostics-buffer-mode tabulated-list-mode
  "Flymake diagnostics"
  "A mode for listing Flymake diagnostics."
  (setq tabulated-list-format
        `[("Line" 5 (lambda (l1 l2)
                      (< (plist-get (car l1) :line)
                         (plist-get (car l2) :line)))
           :right-align t)
          ("Col" 3 nil :right-align t)
          ("Type" 8 (lambda (l1 l2)
                      (< (plist-get (car l1) :severity)
                         (plist-get (car l2) :severity))))
          ("Message" 0 t)])
  (setq tabulated-list-entries
        'flymake--diagnostics-buffer-entries)
  (tabulated-list-init-header))

(defun flymake--diagnostics-buffer-name ()
  (format "*Flymake diagnostics for %s*" (current-buffer)))

(defun flymake-show-diagnostics-buffer ()
  "Show a list of Flymake diagnostics for current buffer."
  (interactive)
  (let* ((name (flymake--diagnostics-buffer-name))
         (source (current-buffer))
         (target (or (get-buffer name)
                     (with-current-buffer (get-buffer-create name)
                       (flymake-diagnostics-buffer-mode)
                       (setq flymake--diagnostics-buffer-source source)
                       (current-buffer)))))
    (with-current-buffer target
      (revert-buffer)
      (display-buffer (current-buffer)))))

(provide 'flymake)

(require 'flymake-proc)

;;; flymake.el ends here

debug log:

solving e4c6a38a77 ...
found e4c6a38a77 in https://git.savannah.gnu.org/cgit/emacs.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).