# HG changeset patch
# User Olle Lundberg <geek@nerd.sh>
# Date 1395874725 -3600
# Node ID 947fb5b1915b0f061384cfdc3f6785a91f44bdc1
# Parent  36c1c80e99a3eeae1053c861a049270d4dc3967d
evolve: active bookmark should move when using prev/next (#37)

The #37 references the bitbucket issue for mutable-history, that
can be found here:
https://bitbucket.org/marmoute/mutable-history/issue/37/

diff -r 36c1c80e99a3 -r 947fb5b1915b hgext/evolve.py
--- a/hgext/evolve.py	Thu Apr 03 23:36:23 2014 -0700
+++ b/hgext/evolve.py	Wed Mar 26 23:58:45 2014 +0100
@@ -1277,7 +1277,12 @@
     displayer = cmdutil.show_changeset(ui, repo, {'template': shorttemplate})
     if len(parents) == 1:
         p = parents[0]
-        hg.update(repo, p.rev())
+        bm = bookmarks.readcurrent(repo)
+        shouldmove = bm is not None and bookmarks.iscurrent(repo, bm)
+        ret = hg.update(repo, p.rev())
+        if not ret and shouldmove:
+            repo._bookmarks[bm] = p.node()
+            repo._bookmarks.write()
         displayer.show(p)
         return 0
     else:
@@ -1303,7 +1308,12 @@
         return 1
     if len(children) == 1:
         c = children[0]
-        hg.update(repo, c.rev())
+        bm = bookmarks.readcurrent(repo)
+        shouldmove = bm is not None and bookmarks.iscurrent(repo, bm)
+        ret = hg.update(repo, c.rev())
+        if not ret and shouldmove:
+            repo._bookmarks[bm] = c.node()
+            repo._bookmarks.write()
         displayer.show(c)
         return 0
     else:
diff -r 36c1c80e99a3 -r 947fb5b1915b tests/test-prev-next.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-prev-next.t	Wed Mar 26 23:58:45 2014 +0100
@@ -0,0 +1,62 @@
+  $ cat >> $HGRCPATH <<EOF
+  > [extensions]
+  > hgext.rebase=
+  > hgext.graphlog=
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
+
+hg prev should move active bookmark
+  $ hg init
+  $ touch a
+  $ hg add a
+  $ hg commit -m 'added a'
+  $ touch b
+  $ hg add b
+  $ hg commit -m 'added b'
+  $ hg bookmark mark
+  $ hg bookmarks
+   * mark                      1:6e742c9127b3
+  $ hg prev
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  [0] added a
+  $ hg bookmarks
+   * mark                      0:a154386e50d1
+
+hg next should move active bookmark
+  $ hg next
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  [1] added b
+  $ hg bookmarks
+   * mark                      1:6e742c9127b3
+
+hg next/prev should not interfere with inactive bookmarks
+  $ touch c
+  $ hg add c
+  $ hg commit -m 'added c'
+  $ hg bookmark -r2 no-move
+  $ hg prev
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  [1] added b
+  $ hg bookmarks
+   * mark                      1:6e742c9127b3
+     no-move                   2:4e26ef31f919
+  $ hg next
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  [2] added c
+  $ hg bookmarks
+   * mark                      2:4e26ef31f919
+     no-move                   2:4e26ef31f919
+  $ hg up 1
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  $ hg next
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  [2] added c
+  $ hg bookmarks
+     mark                      2:4e26ef31f919
+     no-move                   2:4e26ef31f919
+  $ hg prev
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  [1] added b
+  $ hg bookmarks
+     mark                      2:4e26ef31f919
+     no-move                   2:4e26ef31f919