[PATCH 2 of 2 STABLE V2] convert: avoid wrong lfconvert defaults by moving configitems to core

[Matt Harbison]

# HG changeset patch
# User Matt Harbison <matt_harbison at yahoo.com>
# Date 1511667169 18000
#      Sat Nov 25 22:32:49 2017 -0500
# Branch stable
# Node ID 229917a294a28a844ea08bd6729d9b5e54d86329
# Parent  7208fc36b7765c36d31d0ccddb7087081617208c
convert: avoid wrong lfconvert defaults by moving configitems to core

The `hg lfconvert --to-normal` command uses the convert extension internally to
work its magic, but that produced devel-warn messages if the convert extension
wasn't loaded by the user.  The test in fcd2f9b06629 (modified here) wasn't
showing the warnings because the convert extension was loaded via $HGRCPATH.
Most of the config options default to None/False, but 'hg.usebranchnames' and
'hg.tagsbranch' are supposed to default to True and 'default' respectively.

The first iteration of this was to ui.setconfig() inside lfconvert, to force the
convert extension to load.  But there really is no precedent for doing this, and
check-config complained that 'extensions.convert' isn't documented.  Yuya
suggested this alternative.

The p4.encoding lambda had to be ditched in this move to prevent a crash,
because ui._config only invokes the function if the default value is callable,
not dynamicdefault.  Since the orig_encoding value is only being set prior to
creating the sink, I think it is OK (and the only test failure locally is the
same as before the move).

diff --git a/hgext/convert/__init__.py b/hgext/convert/__init__.py
--- a/hgext/convert/__init__.py
+++ b/hgext/convert/__init__.py
@@ -28,103 +28,6 @@
 # leave the attribute unspecified.
 testedwith = 'ships-with-hg-core'
 
-configtable = {}
-configitem = registrar.configitem(configtable)
-
-configitem('convert', 'cvsps.cache',
-    default=True,
-)
-configitem('convert', 'cvsps.fuzz',
-    default=60,
-)
-configitem('convert', 'cvsps.logencoding',
-    default=None,
-)
-configitem('convert', 'cvsps.mergefrom',
-    default=None,
-)
-configitem('convert', 'cvsps.mergeto',
-    default=None,
-)
-configitem('convert', 'git.committeractions',
-    default=lambda: ['messagedifferent'],
-)
-configitem('convert', 'git.extrakeys',
-    default=list,
-)
-configitem('convert', 'git.findcopiesharder',
-    default=False,
-)
-configitem('convert', 'git.remoteprefix',
-    default='remote',
-)
-configitem('convert', 'git.renamelimit',
-    default=400,
-)
-configitem('convert', 'git.saverev',
-    default=True,
-)
-configitem('convert', 'git.similarity',
-    default=50,
-)
-configitem('convert', 'git.skipsubmodules',
-    default=False,
-)
-configitem('convert', 'hg.clonebranches',
-    default=False,
-)
-configitem('convert', 'hg.ignoreerrors',
-    default=False,
-)
-configitem('convert', 'hg.revs',
-    default=None,
-)
-configitem('convert', 'hg.saverev',
-    default=False,
-)
-configitem('convert', 'hg.sourcename',
-    default=None,
-)
-configitem('convert', 'hg.startrev',
-    default=None,
-)
-configitem('convert', 'hg.tagsbranch',
-    default='default',
-)
-configitem('convert', 'hg.usebranchnames',
-    default=True,
-)
-configitem('convert', 'ignoreancestorcheck',
-    default=False,
-)
-configitem('convert', 'localtimezone',
-    default=False,
-)
-configitem('convert', 'p4.encoding',
-    default=lambda: convcmd.orig_encoding,
-)
-configitem('convert', 'p4.startrev',
-    default=0,
-)
-configitem('convert', 'skiptags',
-    default=False,
-)
-configitem('convert', 'svn.debugsvnlog',
-    default=True,
-)
-configitem('convert', 'svn.trunk',
-    default=None,
-)
-configitem('convert', 'svn.tags',
-    default=None,
-)
-configitem('convert', 'svn.branches',
-    default=None,
-)
-configitem('convert', 'svn.startrev',
-    default=0,
-)
-
 # Commands definition was moved elsewhere to ease demandload job.
 
 @command('convert',
diff --git a/hgext/convert/p4.py b/hgext/convert/p4.py
--- a/hgext/convert/p4.py
+++ b/hgext/convert/p4.py
@@ -53,7 +53,8 @@
         common.checktool('p4', abort=False)
 
         self.revmap = {}
-        self.encoding = self.ui.config('convert', 'p4.encoding')
+        self.encoding = self.ui.config('convert', 'p4.encoding',
+                                       common.orig_encoding)
         self.re_type = re.compile(
             "([a-z]+)?(text|binary|symlink|apple|resource|unicode|utf\d+)"
             "(\+\w+)?$")
diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -208,6 +208,99 @@
     default=None,
     generic=True,
 )
+coreconfigitem('convert', 'cvsps.cache',
+    default=True,
+)
+coreconfigitem('convert', 'cvsps.fuzz',
+    default=60,
+)
+coreconfigitem('convert', 'cvsps.logencoding',
+    default=None,
+)
+coreconfigitem('convert', 'cvsps.mergefrom',
+    default=None,
+)
+coreconfigitem('convert', 'cvsps.mergeto',
+    default=None,
+)
+coreconfigitem('convert', 'git.committeractions',
+    default=lambda: ['messagedifferent'],
+)
+coreconfigitem('convert', 'git.extrakeys',
+    default=list,
+)
+coreconfigitem('convert', 'git.findcopiesharder',
+    default=False,
+)
+coreconfigitem('convert', 'git.remoteprefix',
+    default='remote',
+)
+coreconfigitem('convert', 'git.renamelimit',
+    default=400,
+)
+coreconfigitem('convert', 'git.saverev',
+    default=True,
+)
+coreconfigitem('convert', 'git.similarity',
+    default=50,
+)
+coreconfigitem('convert', 'git.skipsubmodules',
+    default=False,
+)
+coreconfigitem('convert', 'hg.clonebranches',
+    default=False,
+)
+coreconfigitem('convert', 'hg.ignoreerrors',
+    default=False,
+)
+coreconfigitem('convert', 'hg.revs',
+    default=None,
+)
+coreconfigitem('convert', 'hg.saverev',
+    default=False,
+)
+coreconfigitem('convert', 'hg.sourcename',
+    default=None,
+)
+coreconfigitem('convert', 'hg.startrev',
+    default=None,
+)
+coreconfigitem('convert', 'hg.tagsbranch',
+    default='default',
+)
+coreconfigitem('convert', 'hg.usebranchnames',
+    default=True,
+)
+coreconfigitem('convert', 'ignoreancestorcheck',
+    default=False,
+)
+coreconfigitem('convert', 'localtimezone',
+    default=False,
+)
+coreconfigitem('convert', 'p4.encoding',
+    default=dynamicdefault,
+)
+coreconfigitem('convert', 'p4.startrev',
+    default=0,
+)
+coreconfigitem('convert', 'skiptags',
+    default=False,
+)
+coreconfigitem('convert', 'svn.debugsvnlog',
+    default=True,
+)
+coreconfigitem('convert', 'svn.trunk',
+    default=None,
+)
+coreconfigitem('convert', 'svn.tags',
+    default=None,
+)
+coreconfigitem('convert', 'svn.branches',
+    default=None,
+)
+coreconfigitem('convert', 'svn.startrev',
+    default=0,
+)
 coreconfigitem('debug', 'dirstate.delaywrite',
     default=0,
 )
diff --git a/tests/test-lfconvert.t b/tests/test-lfconvert.t
--- a/tests/test-lfconvert.t
+++ b/tests/test-lfconvert.t
@@ -233,9 +233,10 @@
   $ cd ..
 
 round-trip: converting back to a normal (non-largefiles) repo with
-"lfconvert --to-normal" should give the same as ../bigfile-repo
+"lfconvert --to-normal" should give the same as ../bigfile-repo.  The
+convert extension is disabled to show config items can be loaded without it.
   $ cd largefiles-repo
-  $ hg lfconvert --to-normal . ../normal-repo
+  $ hg --config extensions.convert=! lfconvert --to-normal . ../normal-repo
   initializing destination ../normal-repo
   0 additional largefiles cached
   scanning source...