# HG changeset patch
# User Martijn Pieters <mjpieters@fb.com>
# Date 1461166393 -3600
# Node ID 790c076cd4a2c2106efb8e6fed9f3dff4c447d61
# Parent  f303b569134c0c32b7863371fbd62f646e25f7fa
graphmod: disable graph styling when HGPLAIN is set (issue5212)

Produce stable output for tools to rely on by hardcoding all edge styles to
"|". This ensures that any tool parsing the output of hg log -G still gets the
same behaviour as pre-3.8 releases.

diff -r f303b569134c -r 790c076cd4a2 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Wed Apr 20 18:26:29 2016 +0100
+++ b/mercurial/cmdutil.py	Wed Apr 20 16:33:13 2016 +0100
@@ -2234,20 +2234,26 @@
     formatnode = _graphnodeformatter(ui, displayer)
     state = graphmod.asciistate()
     styles = state['styles']
-    edgetypes = {
-        'parent': graphmod.PARENT,
-        'grandparent': graphmod.GRANDPARENT,
-        'missing': graphmod.MISSINGPARENT
-    }
-    for name, key in edgetypes.items():
-        # experimental config: experimental.graphstyle.*
-        styles[key] = ui.config('experimental', 'graphstyle.%s' % name,
-                                styles[key])
-        if not styles[key]:
-            styles[key] = None
-
-    # experimental config: experimental.graphshorten
-    state['graphshorten'] = ui.configbool('experimental', 'graphshorten')
+
+    # only set graph styling if HGPLAIN is not set.
+    if ui.plain('graph'):
+        # set all edge styles to |, the default pre-3.8 behaviour
+        styles.update(dict.fromkeys(styles, '|'))
+    else:
+        edgetypes = {
+            'parent': graphmod.PARENT,
+            'grandparent': graphmod.GRANDPARENT,
+            'missing': graphmod.MISSINGPARENT
+        }
+        for name, key in edgetypes.items():
+            # experimental config: experimental.graphstyle.*
+            styles[key] = ui.config('experimental', 'graphstyle.%s' % name,
+                                    styles[key])
+            if not styles[key]:
+                styles[key] = None
+
+        # experimental config: experimental.graphshorten
+        state['graphshorten'] = ui.configbool('experimental', 'graphshorten')
 
     for rev, type, ctx, parents in dag:
         char = formatnode(repo, ctx)
diff -r f303b569134c -r 790c076cd4a2 tests/test-glog.t
--- a/tests/test-glog.t	Wed Apr 20 18:26:29 2016 +0100
+++ b/tests/test-glog.t	Wed Apr 20 16:33:13 2016 +0100
@@ -2633,6 +2633,410 @@
        summary:     (4) merge two known; one immediate left, one immediate right
   
 
+Setting HGPLAIN ignores graphmod styling:
+
+  $ HGPLAIN=1 hg log -G -r 'file("a")' -m
+  @  changeset:   36:08a19a744424
+  |  branch:      branch
+  |  tag:         tip
+  |  parent:      35:9159c3644c5e
+  |  parent:      35:9159c3644c5e
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:36 1970 +0000
+  |  summary:     (36) buggy merge: identical parents
+  |
+  o    changeset:   32:d06dffa21a31
+  |\   parent:      27:886ed638191b
+  | |  parent:      31:621d83e11f67
+  | |  user:        test
+  | |  date:        Thu Jan 01 00:00:32 1970 +0000
+  | |  summary:     (32) expand
+  | |
+  o |  changeset:   31:621d83e11f67
+  |\|  parent:      21:d42a756af44d
+  | |  parent:      30:6e11cd4b648f
+  | |  user:        test
+  | |  date:        Thu Jan 01 00:00:31 1970 +0000
+  | |  summary:     (31) expand
+  | |
+  o |    changeset:   30:6e11cd4b648f
+  |\ \   parent:      28:44ecd0b9ae99
+  | | |  parent:      29:cd9bb2be7593
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:30 1970 +0000
+  | | |  summary:     (30) expand
+  | | |
+  o | |    changeset:   28:44ecd0b9ae99
+  |\ \ \   parent:      1:6db2ef61d156
+  | | | |  parent:      26:7f25b6c2f0b9
+  | | | |  user:        test
+  | | | |  date:        Thu Jan 01 00:00:28 1970 +0000
+  | | | |  summary:     (28) merge zero known
+  | | | |
+  o | | |    changeset:   26:7f25b6c2f0b9
+  |\ \ \ \   parent:      18:1aa84d96232a
+  | | | | |  parent:      25:91da8ed57247
+  | | | | |  user:        test
+  | | | | |  date:        Thu Jan 01 00:00:26 1970 +0000
+  | | | | |  summary:     (26) merge one known; far right
+  | | | | |
+  | o-----+  changeset:   25:91da8ed57247
+  | | | | |  parent:      21:d42a756af44d
+  | | | | |  parent:      24:a9c19a3d96b7
+  | | | | |  user:        test
+  | | | | |  date:        Thu Jan 01 00:00:25 1970 +0000
+  | | | | |  summary:     (25) merge one known; far left
+  | | | | |
+  | o | | |    changeset:   24:a9c19a3d96b7
+  | |\ \ \ \   parent:      0:e6eb3150255d
+  | | | | | |  parent:      23:a01cddf0766d
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:24 1970 +0000
+  | | | | | |  summary:     (24) merge one known; immediate right
+  | | | | | |
+  | o---+ | |  changeset:   23:a01cddf0766d
+  | | | | | |  parent:      1:6db2ef61d156
+  | | | | | |  parent:      22:e0d9cccacb5d
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:23 1970 +0000
+  | | | | | |  summary:     (23) merge one known; immediate left
+  | | | | | |
+  | o-------+  changeset:   22:e0d9cccacb5d
+  | | | | | |  parent:      18:1aa84d96232a
+  |/ / / / /   parent:      21:d42a756af44d
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:22 1970 +0000
+  | | | | |    summary:     (22) merge two known; one far left, one far right
+  | | | | |
+  | | | | o    changeset:   21:d42a756af44d
+  | | | | |\   parent:      19:31ddc2c1573b
+  | | | | | |  parent:      20:d30ed6450e32
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:21 1970 +0000
+  | | | | | |  summary:     (21) expand
+  | | | | | |
+  +-+-------o  changeset:   20:d30ed6450e32
+  | | | | |    parent:      0:e6eb3150255d
+  | | | | |    parent:      18:1aa84d96232a
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:20 1970 +0000
+  | | | | |    summary:     (20) merge two known; two far right
+  | | | | |
+  | | | | o    changeset:   19:31ddc2c1573b
+  | | | | |\   parent:      15:1dda3f72782d
+  | | | | | |  parent:      17:44765d7c06e0
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:19 1970 +0000
+  | | | | | |  summary:     (19) expand
+  | | | | | |
+  o---+---+ |  changeset:   18:1aa84d96232a
+    | | | | |  parent:      1:6db2ef61d156
+   / / / / /   parent:      15:1dda3f72782d
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:18 1970 +0000
+  | | | | |    summary:     (18) merge two known; two far left
+  | | | | |
+  | | | | o    changeset:   17:44765d7c06e0
+  | | | | |\   parent:      12:86b91144a6e9
+  | | | | | |  parent:      16:3677d192927d
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:17 1970 +0000
+  | | | | | |  summary:     (17) expand
+  | | | | | |
+  +-+-------o  changeset:   16:3677d192927d
+  | | | | |    parent:      0:e6eb3150255d
+  | | | | |    parent:      1:6db2ef61d156
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:16 1970 +0000
+  | | | | |    summary:     (16) merge two known; one immediate right, one near right
+  | | | | |
+  | | | o |    changeset:   15:1dda3f72782d
+  | | | |\ \   parent:      13:22d8966a97e3
+  | | | | | |  parent:      14:8eac370358ef
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:15 1970 +0000
+  | | | | | |  summary:     (15) expand
+  | | | | | |
+  +-------o |  changeset:   14:8eac370358ef
+  | | | | |/   parent:      0:e6eb3150255d
+  | | | | |    parent:      12:86b91144a6e9
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:14 1970 +0000
+  | | | | |    summary:     (14) merge two known; one immediate right, one far right
+  | | | | |
+  | | | o |    changeset:   13:22d8966a97e3
+  | | | |\ \   parent:      9:7010c0af0a35
+  | | | | | |  parent:      11:832d76e6bdf2
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:13 1970 +0000
+  | | | | | |  summary:     (13) expand
+  | | | | | |
+  | +---+---o  changeset:   12:86b91144a6e9
+  | | | | |    parent:      1:6db2ef61d156
+  | | | | |    parent:      9:7010c0af0a35
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:12 1970 +0000
+  | | | | |    summary:     (12) merge two known; one immediate right, one far left
+  | | | | |
+  | | | | o    changeset:   11:832d76e6bdf2
+  | | | | |\   parent:      6:b105a072e251
+  | | | | | |  parent:      10:74c64d036d72
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:11 1970 +0000
+  | | | | | |  summary:     (11) expand
+  | | | | | |
+  +---------o  changeset:   10:74c64d036d72
+  | | | | |/   parent:      0:e6eb3150255d
+  | | | | |    parent:      6:b105a072e251
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:10 1970 +0000
+  | | | | |    summary:     (10) merge two known; one immediate left, one near right
+  | | | | |
+  | | | o |    changeset:   9:7010c0af0a35
+  | | | |\ \   parent:      7:b632bb1b1224
+  | | | | | |  parent:      8:7a0b11f71937
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:09 1970 +0000
+  | | | | | |  summary:     (9) expand
+  | | | | | |
+  +-------o |  changeset:   8:7a0b11f71937
+  | | | |/ /   parent:      0:e6eb3150255d
+  | | | | |    parent:      7:b632bb1b1224
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:08 1970 +0000
+  | | | | |    summary:     (8) merge two known; one immediate left, one far right
+  | | | | |
+  | | | o |    changeset:   7:b632bb1b1224
+  | | | |\ \   parent:      2:3d9a33b8d1e1
+  | | | | | |  parent:      5:4409d547b708
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:07 1970 +0000
+  | | | | | |  summary:     (7) expand
+  | | | | | |
+  | | | +---o  changeset:   6:b105a072e251
+  | | | | |/   parent:      2:3d9a33b8d1e1
+  | | | | |    parent:      5:4409d547b708
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:06 1970 +0000
+  | | | | |    summary:     (6) merge two known; one immediate left, one far left
+  | | | | |
+  | | | o |    changeset:   5:4409d547b708
+  | | | |\ \   parent:      3:27eef8ed80b4
+  | | | | | |  parent:      4:26a8bac39d9f
+  | | | | | |  user:        test
+  | | | | | |  date:        Thu Jan 01 00:00:05 1970 +0000
+  | | | | | |  summary:     (5) expand
+  | | | | | |
+  | +---o | |  changeset:   4:26a8bac39d9f
+  | | | |/ /   parent:      1:6db2ef61d156
+  | | | | |    parent:      3:27eef8ed80b4
+  | | | | |    user:        test
+  | | | | |    date:        Thu Jan 01 00:00:04 1970 +0000
+  | | | | |    summary:     (4) merge two known; one immediate left, one immediate right
+  | | | | |
+
+.. unless HGPLAINEXCEPT=graph is set:
+
+  $ HGPLAIN=1 HGPLAINEXCEPT=graph hg log -G -r 'file("a")' -m
+  @  changeset:   36:08a19a744424
+  :  branch:      branch
+  :  tag:         tip
+  :  parent:      35:9159c3644c5e
+  :  parent:      35:9159c3644c5e
+  :  user:        test
+  :  date:        Thu Jan 01 00:00:36 1970 +0000
+  :  summary:     (36) buggy merge: identical parents
+  :
+  o    changeset:   32:d06dffa21a31
+  |\   parent:      27:886ed638191b
+  | :  parent:      31:621d83e11f67
+  | :  user:        test
+  | :  date:        Thu Jan 01 00:00:32 1970 +0000
+  | :  summary:     (32) expand
+  | :
+  o :  changeset:   31:621d83e11f67
+  |\:  parent:      21:d42a756af44d
+  | :  parent:      30:6e11cd4b648f
+  | :  user:        test
+  | :  date:        Thu Jan 01 00:00:31 1970 +0000
+  | :  summary:     (31) expand
+  | :
+  o :    changeset:   30:6e11cd4b648f
+  |\ \   parent:      28:44ecd0b9ae99
+  | ~ :  parent:      29:cd9bb2be7593
+  |   :  user:        test
+  |   :  date:        Thu Jan 01 00:00:30 1970 +0000
+  |   :  summary:     (30) expand
+  |  /
+  o :    changeset:   28:44ecd0b9ae99
+  |\ \   parent:      1:6db2ef61d156
+  | ~ :  parent:      26:7f25b6c2f0b9
+  |   :  user:        test
+  |   :  date:        Thu Jan 01 00:00:28 1970 +0000
+  |   :  summary:     (28) merge zero known
+  |  /
+  o :    changeset:   26:7f25b6c2f0b9
+  |\ \   parent:      18:1aa84d96232a
+  | | :  parent:      25:91da8ed57247
+  | | :  user:        test
+  | | :  date:        Thu Jan 01 00:00:26 1970 +0000
+  | | :  summary:     (26) merge one known; far right
+  | | :
+  | o :  changeset:   25:91da8ed57247
+  | |\:  parent:      21:d42a756af44d
+  | | :  parent:      24:a9c19a3d96b7
+  | | :  user:        test
+  | | :  date:        Thu Jan 01 00:00:25 1970 +0000
+  | | :  summary:     (25) merge one known; far left
+  | | :
+  | o :    changeset:   24:a9c19a3d96b7
+  | |\ \   parent:      0:e6eb3150255d
+  | | ~ :  parent:      23:a01cddf0766d
+  | |   :  user:        test
+  | |   :  date:        Thu Jan 01 00:00:24 1970 +0000
+  | |   :  summary:     (24) merge one known; immediate right
+  | |  /
+  | o :    changeset:   23:a01cddf0766d
+  | |\ \   parent:      1:6db2ef61d156
+  | | ~ :  parent:      22:e0d9cccacb5d
+  | |   :  user:        test
+  | |   :  date:        Thu Jan 01 00:00:23 1970 +0000
+  | |   :  summary:     (23) merge one known; immediate left
+  | |  /
+  | o :  changeset:   22:e0d9cccacb5d
+  |/:/   parent:      18:1aa84d96232a
+  | :    parent:      21:d42a756af44d
+  | :    user:        test
+  | :    date:        Thu Jan 01 00:00:22 1970 +0000
+  | :    summary:     (22) merge two known; one far left, one far right
+  | :
+  | o    changeset:   21:d42a756af44d
+  | |\   parent:      19:31ddc2c1573b
+  | | |  parent:      20:d30ed6450e32
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:21 1970 +0000
+  | | |  summary:     (21) expand
+  | | |
+  +---o  changeset:   20:d30ed6450e32
+  | | |  parent:      0:e6eb3150255d
+  | | ~  parent:      18:1aa84d96232a
+  | |    user:        test
+  | |    date:        Thu Jan 01 00:00:20 1970 +0000
+  | |    summary:     (20) merge two known; two far right
+  | |
+  | o    changeset:   19:31ddc2c1573b
+  | |\   parent:      15:1dda3f72782d
+  | | |  parent:      17:44765d7c06e0
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:19 1970 +0000
+  | | |  summary:     (19) expand
+  | | |
+  o | |  changeset:   18:1aa84d96232a
+  |\| |  parent:      1:6db2ef61d156
+  ~ | |  parent:      15:1dda3f72782d
+    | |  user:        test
+    | |  date:        Thu Jan 01 00:00:18 1970 +0000
+    | |  summary:     (18) merge two known; two far left
+   / /
+  | o    changeset:   17:44765d7c06e0
+  | |\   parent:      12:86b91144a6e9
+  | | |  parent:      16:3677d192927d
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:17 1970 +0000
+  | | |  summary:     (17) expand
+  | | |
+  | | o    changeset:   16:3677d192927d
+  | | |\   parent:      0:e6eb3150255d
+  | | ~ ~  parent:      1:6db2ef61d156
+  | |      user:        test
+  | |      date:        Thu Jan 01 00:00:16 1970 +0000
+  | |      summary:     (16) merge two known; one immediate right, one near right
+  | |
+  o |    changeset:   15:1dda3f72782d
+  |\ \   parent:      13:22d8966a97e3
+  | | |  parent:      14:8eac370358ef
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:15 1970 +0000
+  | | |  summary:     (15) expand
+  | | |
+  | o |  changeset:   14:8eac370358ef
+  | |\|  parent:      0:e6eb3150255d
+  | ~ |  parent:      12:86b91144a6e9
+  |   |  user:        test
+  |   |  date:        Thu Jan 01 00:00:14 1970 +0000
+  |   |  summary:     (14) merge two known; one immediate right, one far right
+  |  /
+  o |    changeset:   13:22d8966a97e3
+  |\ \   parent:      9:7010c0af0a35
+  | | |  parent:      11:832d76e6bdf2
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:13 1970 +0000
+  | | |  summary:     (13) expand
+  | | |
+  +---o  changeset:   12:86b91144a6e9
+  | | |  parent:      1:6db2ef61d156
+  | | ~  parent:      9:7010c0af0a35
+  | |    user:        test
+  | |    date:        Thu Jan 01 00:00:12 1970 +0000
+  | |    summary:     (12) merge two known; one immediate right, one far left
+  | |
+  | o    changeset:   11:832d76e6bdf2
+  | |\   parent:      6:b105a072e251
+  | | |  parent:      10:74c64d036d72
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:11 1970 +0000
+  | | |  summary:     (11) expand
+  | | |
+  | | o  changeset:   10:74c64d036d72
+  | |/|  parent:      0:e6eb3150255d
+  | | ~  parent:      6:b105a072e251
+  | |    user:        test
+  | |    date:        Thu Jan 01 00:00:10 1970 +0000
+  | |    summary:     (10) merge two known; one immediate left, one near right
+  | |
+  o |    changeset:   9:7010c0af0a35
+  |\ \   parent:      7:b632bb1b1224
+  | | |  parent:      8:7a0b11f71937
+  | | |  user:        test
+  | | |  date:        Thu Jan 01 00:00:09 1970 +0000
+  | | |  summary:     (9) expand
+  | | |
+  | o |  changeset:   8:7a0b11f71937
+  |/| |  parent:      0:e6eb3150255d
+  | ~ |  parent:      7:b632bb1b1224
+  |   |  user:        test
+  |   |  date:        Thu Jan 01 00:00:08 1970 +0000
+  |   |  summary:     (8) merge two known; one immediate left, one far right
+  |  /
+  o |    changeset:   7:b632bb1b1224
+  |\ \   parent:      2:3d9a33b8d1e1
+  | ~ |  parent:      5:4409d547b708
+  |   |  user:        test
+  |   |  date:        Thu Jan 01 00:00:07 1970 +0000
+  |   |  summary:     (7) expand
+  |  /
+  | o  changeset:   6:b105a072e251
+  |/|  parent:      2:3d9a33b8d1e1
+  | ~  parent:      5:4409d547b708
+  |    user:        test
+  |    date:        Thu Jan 01 00:00:06 1970 +0000
+  |    summary:     (6) merge two known; one immediate left, one far left
+  |
+  o    changeset:   5:4409d547b708
+  |\   parent:      3:27eef8ed80b4
+  | ~  parent:      4:26a8bac39d9f
+  |    user:        test
+  |    date:        Thu Jan 01 00:00:05 1970 +0000
+  |    summary:     (5) expand
+  |
+  o    changeset:   4:26a8bac39d9f
+  |\   parent:      1:6db2ef61d156
+  ~ ~  parent:      3:27eef8ed80b4
+       user:        test
+       date:        Thu Jan 01 00:00:04 1970 +0000
+       summary:     (4) merge two known; one immediate left, one immediate right
+  
+
   $ cd ..
 
 Change graph shorten, test better with graphstyle.missing not none