# HG changeset patch
# User Sushil khanchi <sushilkhanchi97@gmail.com>
# Date 1538465129 -19800
# Node ID cc3a0b13ae578660c4ae5f3526e09b5f3dab1a63
# Parent  dd81d7f438576bd1343000202430ec71ba4b32c5
evolve: use stack alias s# in `hg evolve` msgs

As repository grows revision number lose their usefulness. To
make it a little better than now, after this patch we will be
using short stack aliases introduced by the topic extension
(as displayed by `hg stack`).

These stack aliases s# will be used only when user has enabled
topic extension and his repo's current active topic is same as
the revs to be evolved.

For now, this patch doesn't cover `continue` case. I will discuss about this
with Pierre-Yves David. Maybe we have to store the info in evolvestate that "we
were using stack aliases".

diff -r dd81d7f43857 -r cc3a0b13ae57 hgext3rd/evolve/evolvecmd.py
--- a/hgext3rd/evolve/evolvecmd.py	Mon Oct 01 19:59:17 2018 +0530
+++ b/hgext3rd/evolve/evolvecmd.py	Tue Oct 02 12:55:29 2018 +0530
@@ -54,7 +54,7 @@
 abortmessage = _("see `hg help evolve.interrupted`\n")
 
 def _solveone(ui, repo, ctx, evolvestate, dryrun, confirm,
-              progresscb, category, lastsolved=None):
+              progresscb, category, lastsolved=None, stacktmplt=False):
     """Resolve the troubles affecting one revision
 
     returns a tuple (bool, newnode) where,
@@ -63,8 +63,14 @@
                  formed. newnode can be node, when resolution led to no new
                  commit. If bool is False, this is ''.
     """
+    displayer = None
+    if stacktmplt:
+        displayer = compat.changesetdisplayer(ui, repo,
+                                              {'template': stacktemplate})
+    else:
+        displayer = compat.changesetdisplayer(ui, repo,
+                                              {'template': shorttemplate})
     wlock = lock = tr = None
-    displayer = compat.changesetdisplayer(ui, repo, {'template': shorttemplate})
     try:
         wlock = repo.wlock()
         lock = repo.lock()
@@ -1571,12 +1577,23 @@
         # lastsolved: keep track of successor of last troubled cset we evolved
         # to confirm that if atop msg should be suppressed to remove redundancy
         lastsolved = None
+
+        # check if revs to be evolved are in active topic to make sure that we
+        # can use stack aliases s# in evolve msgs.
+        activetopic = getattr(repo, 'currenttopic', '')
+        rev = revs[0]
+        revtopic = getattr(repo[rev], 'topic', '')
+        if revtopic:
+            revtopic = revtopic()
+        stacktmplt = False
+        if activetopic and revtopic and (activetopic == revtopic):
+            stacktmplt = True
         for rev in revs:
             curctx = repo[rev]
             progresscb()
             ret = _solveone(ui, repo, curctx, evolvestate, dryrunopt,
                             confirmopt, progresscb, targetcat,
-                            lastsolved=lastsolved)
+                            lastsolved=lastsolved, stacktmplt=stacktmplt)
             seen += 1
             if ret[0]:
                 evolvestate['replacements'][curctx.node()] = ret[1]
@@ -1588,7 +1605,8 @@
                 # we were processing an orphan merge with both parents obsolete,
                 # stabilized for second parent, re-stabilize for the first parent
                 ret = _solveone(ui, repo, repo[ret[1]], evolvestate, dryrunopt,
-                                confirmopt, progresscb, targetcat)
+                                confirmopt, progresscb, targetcat,
+                                stacktmplt=stacktmplt)
                 if ret[0]:
                     evolvestate['replacements'][curctx.node()] = ret[1]
                 else:
diff -r dd81d7f43857 -r cc3a0b13ae57 tests/test-evolve-topic.t
--- a/tests/test-evolve-topic.t	Mon Oct 01 19:59:17 2018 +0530
+++ b/tests/test-evolve-topic.t	Tue Oct 02 12:55:29 2018 +0530
@@ -123,10 +123,19 @@
 
 Run evolve --all
 
+  $ hg stack
+  ### topic: foo
+  ### target: default (branch)
+  s4$ add fff (current unstable)
+  s3$ add eee (unstable)
+  s2: add ddd
+  s1: add ccc
+  s0^ add bbb (base)
+
   $ hg evolve --all
-  move:[4] add eee
-  atop:[10] add ddd
-  move:[11] add fff
+  move:[s3] add eee
+  atop:[s2] add ddd
+  move:[s4] add fff
   working directory is now at 070c5573d8f9
   $ hg log -G
   @  13 - {foo} 070c5573d8f9 add fff (draft)