# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1522054812 -28800
# Node ID 76cd5816268ecaaabc03eec4c58e6552b67ae3d7
# Parent  5fc502e149f199378be015d7d08070a030811ede
templates: add whyunstable template keyword

diff -r 5fc502e149f1 -r 76cd5816268e mercurial/templatekw.py
--- a/mercurial/templatekw.py	Sat Apr 14 00:41:44 2018 -0400
+++ b/mercurial/templatekw.py	Mon Mar 26 17:00:12 2018 +0800
@@ -793,6 +793,28 @@
         return 'verbose'
     return ''
 
+@templatekeyword('whyunstable', requires={'repo', 'ctx'})
+def showwhyunstable(context, mapping):
+    """List of dicts explaining all instabilities of a changeset.
+    (EXPERIMENTAL)
+    """
+    repo = context.resource(mapping, 'repo')
+    ctx = context.resource(mapping, 'ctx')
+
+    def formatnode(ctx):
+        return ' %s (%s)' % (scmutil.formatchangeid(ctx), ctx.phasestr())
+
+    entries = obsutil.whyunstable(repo, ctx)
+
+    for entry in entries:
+        if entry.get('divergentnodes'):
+            dnodes = entry['divergentnodes']
+            entry['divergentnodes'] = ''.join(formatnode(dnode)
+                                              for dnode in dnodes)
+
+    tmpl = '{instability}:{divergentnodes} {reason} {node|short}'
+    return templateutil.mappinglist(entries, tmpl=tmpl, sep='\n')
+
 def loadkeyword(ui, extname, registrarobj):
     """Load template keyword from specified registrarobj
     """
diff -r 5fc502e149f1 -r 76cd5816268e tests/test-obsolete-divergent.t
--- a/tests/test-obsolete-divergent.t	Sat Apr 14 00:41:44 2018 -0400
+++ b/tests/test-obsolete-divergent.t	Mon Mar 26 17:00:12 2018 +0800
@@ -721,6 +721,11 @@
   $ hg debugwhyunstable 1a2a9b5b0030
   content-divergent: 70d5a63ca112acb3764bc1d7320ca90ea688d671 (draft) predecessor a178212c3433c4e77b573f6011e29affb8aefa33
 
+  $ hg log -r 1a2a9b5b0030 --hidden -T '{whyunstable}\n'
+  content-divergent: 4:70d5a63ca112 (draft) predecessor a178212c3433
+  $ hg log -r 1a2a9b5b0030 --hidden -T '{whyunstable%"{instability}:{divergentnodes} {reason} {node}\n"}'
+  content-divergent: 4:70d5a63ca112 (draft) predecessor a178212c3433c4e77b573f6011e29affb8aefa33
+
 #if serve
 
   $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
diff -r 5fc502e149f1 -r 76cd5816268e tests/test-obsolete.t
--- a/tests/test-obsolete.t	Sat Apr 14 00:41:44 2018 -0400
+++ b/tests/test-obsolete.t	Mon Mar 26 17:00:12 2018 +0800
@@ -1044,6 +1044,15 @@
   orphan: obsolete parent 3de5eca88c00aa039da7399a220f4a5221faa585
   phase-divergent: immutable predecessor 245bde4270cd1072a27757984f9cda8ba26f08ca
 
+test whyunstable template keyword
+
+  $ hg log -r 50c51b361e60 -T '{whyunstable}\n'
+  orphan: obsolete parent 3de5eca88c00
+  phase-divergent: immutable predecessor 245bde4270cd
+  $ hg log -r 50c51b361e60 -T '{whyunstable%"{instability}: {reason} {node}\n"}'
+  orphan: obsolete parent 3de5eca88c00aa039da7399a220f4a5221faa585
+  phase-divergent: immutable predecessor 245bde4270cd1072a27757984f9cda8ba26f08ca
+
 #if serve
 
   $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log