[PATCH v3 0/2] emacs: fold long headers when sending

[PATCH v3 0/2] emacs: fold long headers when sending

[Mark Walters]

Version 2 of this series is at
id:1488649637-19006-1-git-send-email-markwalters1009@gmail.com

The change here is to split the folding headers function into an
explicit function as this makes managing the hook simpler.

Best wishes

Mark


Mark Walters (2):
  Test: emacs: test for folding long headers.
  emacs: compat: backport fix for folding long headers when sending

 emacs/notmuch-compat.el | 28 +++++++++++++++---
 test/T310-emacs.sh      | 78 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+), 4 deletions(-)

-- 
2.1.4

[PATCH v3 1/2] Test: emacs: test for folding long headers.

[Mark Walters]

Headers of more than 998 characters should be folded when sending.
However, until recently, emacs did not do this.

This adds a (known broken) test for this when sending messages in
emacs. We will backport the fix to notmuch-emacs in the next
changeset.
---
 test/T310-emacs.sh | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)

diff --git a/test/T310-emacs.sh b/test/T310-emacs.sh
index 01385ae..f626d9a 100755
--- a/test/T310-emacs.sh
+++ b/test/T310-emacs.sh
@@ -208,6 +208,84 @@ This is a test that messages are sent via SMTP
 EOF
 test_expect_equal_file OUTPUT EXPECTED
 
+test_begin_subtest "Folding a long header when sending via (fake) SMTP"
+long_subject="This is a long subject `echo {1..1000}`"
+emacs_deliver_message \
+    "${long_subject}" \
+    'This is a test that long headers are folded when messages are sent via SMTP' \
+    '(message-goto-to)
+     (kill-whole-line)
+     (insert "To: user@example.com\n")'
+sed \
+    -e s',^Message-ID: <.*>$,Message-ID: <XXX>,' \
+    -e s',^\(Content-Type: text/plain\); charset=us-ascii$,\1,' < sent_message >OUTPUT
+cat <<EOF >EXPECTED
+From: Notmuch Test Suite <test_suite@notmuchmail.org>
+To: user@example.com
+Subject: This is a long subject 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
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+ 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
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+ 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455
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+ 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
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+ 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581
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+ 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
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+ 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
+Date: 01 Jan 2000 12:00:00 -0000
+Message-ID: <XXX>
+MIME-Version: 1.0
+Content-Type: text/plain
+
+This is a test that long headers are folded when messages are sent via SMTP
+EOF
+test_expect_equal_file OUTPUT EXPECTED
+
 test_begin_subtest "Verify that sent messages are saved/searchable (via FCC)"
 notmuch new > /dev/null
 output=$(notmuch search 'subject:"testing message sent via SMTP"' | notmuch_search_sanitize)
-- 
2.1.4

Re: [PATCH v3 1/2] Test: emacs: test for folding long headers.

[David Bremner]

Mark Walters <markwalters1009@gmail.com> writes:

> Headers of more than 998 characters should be folded when sending.
> However, until recently, emacs did not do this.

series pushed to master

d

[PATCH v3 2/2] emacs: compat: backport fix for folding long headers when sending

[Mark Walters]

This backports the fix from emacs master (commit
77bbca8c82f6e553c42abbfafca28f55fc995d00) to notmuch-emacs to wrap
long headers.

This fixes the test introduced in the previous changeset.
---
 emacs/notmuch-compat.el | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/emacs/notmuch-compat.el b/emacs/notmuch-compat.el
index c3d827a..2cedd39 100644
--- a/emacs/notmuch-compat.el
+++ b/emacs/notmuch-compat.el
@@ -1,8 +1,28 @@
-;; Compatibility functions for emacs 23 and 24 pre 24.4
+;; Compatibility functions for earlier versions of emacs
 
-;; The functions in this file are copied from eamcs 24.4 and are
-;; Copyright (C) 1985-1986, 1992, 1994-1995, 1999-2014 Free Software
-;; Foundation, Inc.
+;; The functions in this file are copied from more modern versions of
+;; emacs and are Copyright (C) 1985-1986, 1992, 1994-1995, 1999-2017
+;; Free Software Foundation, Inc.
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; emacs master has a bugfix for folding long headers when sending
+;; messages. Include the fix for earlier versions of emacs. To avoid
+;; interfering with gnus we only run the hook when called from
+;; notmuch-message-mode.
+
+(declare-function mail-header-fold-field "mail-parse" nil)
+
+(defun notmuch-message--fold-long-headers ()
+  (when (eq major-mode 'notmuch-message-mode)
+    (goto-char (point-min))
+    (while (not (eobp))
+      (when (and (looking-at "[^:]+:")
+		 (> (- (line-end-position) (point)) 998))
+	(mail-header-fold-field))
+      (forward-line 1))))
+
+(unless (fboundp 'message--fold-long-headers)
+  (add-hook 'message-header-hook 'notmuch-message--fold-long-headers))
 
 (if (fboundp 'setq-local)
     (defalias 'notmuch-setq-local 'setq-local)
-- 
2.1.4