# HG changeset patch
# User Rodrigo Damazio Bovendorp <rdamazio@google.com>
# Date 1577508013 28800
# Node ID 1fda186ae6b7ff56b041fb4c7b343199914ee048
# Parent  353e546ab324e8c637dbd6334c2489abebde54b7
obslog: add display of precursor information to the default template

This will still only be output when the user passes --precursors to the command
(otherwise the data just won't be there).
This addresses a common user request, where they actually would find more
intuitive to use --precursors --no-successors.

diff -r 353e546ab324 -r 1fda186ae6b7 hgext3rd/evolve/obshistory.py
--- a/hgext3rd/evolve/obshistory.py	Fri Dec 27 20:38:10 2019 -0800
+++ b/hgext3rd/evolve/obshistory.py	Fri Dec 27 20:40:13 2019 -0800
@@ -113,9 +113,20 @@
 }
 TEMPLATE_VERB = b"""{label("evolve.verb", verb)}"""
 TEMPLATE_SUCCNODES = b"""{label("evolve.node", join(succnodes % "{succnode|short}", ", "))}"""
-TEMPLATE_REWRITE = b"""{if(succnodes, "%(verb)s{if(effects, "({join(effects, ", ")})")} as %(succnodes)s", "pruned")}""" % {
+TEMPLATE_PRECNODE = b"""{label("evolve.node", precnode|short)}"""
+TEMPLATE_REWRITE_NODES = b"""{ifeq(nodetype, "precursor", "as %(succnodes)s", "from %(precnode)s")}""" % {
+    b"succnodes": TEMPLATE_SUCCNODES,
+    b"precnode": TEMPLATE_PRECNODE,
+}
+TEMPLATE_REWRITE_MARKER = b"""%(verb)s{if(effects, "({join(effects, ", ")})")} %(nodes)s""" % {
     b"verb": TEMPLATE_VERB,
-    b"succnodes": TEMPLATE_SUCCNODES
+    b"nodes": TEMPLATE_REWRITE_NODES,
+}
+# Output the marker details if either this is the successor of the marker or
+# there are successors.
+TEMPLATE_REWRITE = b"""{
+ifeq(nodetype, "successor", "%(marker)s", if(succnodes, "%(marker)s", "pruned"))}""" % {
+    b"marker": TEMPLATE_REWRITE_MARKER,
 }
 TEMPLATE_OPERATION = b"""{if(operation, "using {label("evolve.operation", operation)}")}"""
 TEMPLATE_USER = b"""by {label("evolve.user", user)}"""
diff -r 353e546ab324 -r 1fda186ae6b7 tests/test-evolve-obshistory-amend.t
--- a/tests/test-evolve-obshistory-amend.t	Fri Dec 27 20:38:10 2019 -0800
+++ b/tests/test-evolve-obshistory-amend.t	Fri Dec 27 20:40:13 2019 -0800
@@ -67,6 +67,21 @@
          +42
   
   
+  $ hg obslog --precursors 4ae3a4151de9
+  @  4ae3a4151de9 (2) A1
+  |    rewritten(description, content) from 471f378eab4c using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+  |
+  x  471f378eab4c (1) A0
+       rewritten(description, content) as 4ae3a4151de9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+  
+
+  $ hg obslog --precursors --no-successors 4ae3a4151de9
+  @  4ae3a4151de9 (2) A1
+  |    rewritten(description, content) from 471f378eab4c using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+  |
+  x  471f378eab4c (1) A0
+  
+
   $ hg obslog --patch --color debug
   @  [evolve.node|4ae3a4151de9] [evolve.rev|(2)] [evolve.short_description|A1]
   |
diff -r 353e546ab324 -r 1fda186ae6b7 tests/test-evolve-obshistory-complex.t
--- a/tests/test-evolve-obshistory-complex.t	Fri Dec 27 20:38:10 2019 -0800
+++ b/tests/test-evolve-obshistory-complex.t	Fri Dec 27 20:40:13 2019 -0800
@@ -469,3 +469,53 @@
   x  c473644ee0e9 (2) B
        rewritten(description, parent, content) as b868bc49b0a4 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
   
+
+  $ hg obslog --precursors --no-successors --all 15
+  o  19e14c8397fc (10) fold0
+  |    rewritten(parent, content) from b868bc49b0a4 using split by test (Thu Jan 01 00:00:00 1970 +0000)
+  |
+  | *    7b3290f6e0a0 (12) fold1
+  | |\     rewritten(parent, content) from d15d0ffc75f6 using split by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | |    rewritten(description, parent, content) from e036916b63ea using prune by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | |
+  | | | @  d4a000f63ee9 (15) fold2
+  | | | |    rewritten(parent, content) from 100cc25b765f using split by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | |
+  | | | | *  ec31316faa9d (14) fold2
+  | | | |/|    rewritten(parent, content) from 100cc25b765f using split by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | |    rewritten(description, parent, content) from d0f33db50670 using prune by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | |      note: this is a note stored in obsmarker in prune
+  | | | | |
+  | | | x |    100cc25b765f (9) fold2
+  | | | |\ \     rewritten(description, content) from 0da815c333f6 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | | |      note: folding changesets to test
+  | | | | | |    rewritten(description, parent, content) from d9f908fde1a1 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | | |      note: folding changesets to test
+  | | | | | |
+  | +-------x  d0f33db50670 (13) fold1
+  | | | | |      rewritten(parent, content) from d15d0ffc75f6 using split by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | |
+  +---x | |  e036916b63ea (11) fold0
+  | |  / /     rewritten(parent, content) from b868bc49b0a4 using split by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | |
+  | | x /  0da815c333f6 (5) E
+  | |  /
+  x | |    b868bc49b0a4 (7) fold0
+  |\ \ \     rewritten(description, content) from 2a34000d3544 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | |    rewritten(description, parent, content) from c473644ee0e9 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | |
+  | | x |    d15d0ffc75f6 (8) fold1
+  | | |\ \     rewritten(description, parent, content) from 868d2e0eb19c using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | |    rewritten(description, content) from a8df460dbbfe using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  | | | | |
+  | | | | x  d9f908fde1a1 (6) F
+  | | | |
+  x | | |  2a34000d3544 (1) A
+   / / /
+  | x /  868d2e0eb19c (4) D
+  |  /
+  | x  a8df460dbbfe (3) C
+  |
+  x  c473644ee0e9 (2) B
+  
+