cmdutil: expand style paths (issue1948)

Fix suggested by Andrea Riciputi <[e-mail]>

mercurial/cmdutil.py

@@ -1005,7 +1005,7 b' def show_changeset(ui, repo, opts, buffe'
         if tmpl:
             tmpl = templater.parsestring(tmpl)
         else:
-            style = ui.config('ui', 'style')
+            style = util.expandpath(ui.config('ui', 'style', ''))
 
     if not (tmpl or style):
         return changeset_printer(ui, repo, patch, opts, buffered)

tests/test-command-template

@@ -171,5 +171,18 b" echo '# merged tag overrides'"
 hg tag -r 5 -m t5 -d '9 0' t5
 hg tag -r 3 -m at3 -d '10 0' at3
 hg log --template '{rev}: {latesttag}+{latesttagdistance}\n'
+cd ..
+
+echo '# style path expansion (issue1948)'
+mkdir -p home/styles
+cat > home/styles/teststyle <<EOF
+changeset = 'test {rev}:{node|short}\n'
+EOF
+HOME=`pwd`/home; export HOME
+cat > latesttag/.hg/hgrc <<EOF
+[ui]
+style = ~/styles/teststyle
+EOF
+hg -R latesttag tip
 
 echo '# done'

tests/test-command-template.out

@@ -723,4 +723,6 b' 3: at3:t3+0'
 2: t2+0
 1: t1+0
 0: null+1
+# style path expansion (issue1948)
+test 10:dee8f28249af
 # done