Make {file_copies} usable as a --template key
Before this, to display file copies in templates, you had to write something
like {file_copies%filecopy}. For some reason, the {file_copy} subtemplate was
used by default but not defined by default in changeset_templater, while styles
were already using it. Here we define {file_copy} in changeset_templater, and
change the templater to handle formatting strings like {file_copies%filecopy}
with already expanded keys (in this case {file_copies}), for backward
compatibility.
#!/bin/sh
# test command parsing and dispatch
"$TESTDIR/hghave" no-outer-repo || exit 80
hg init a
cd a
echo a > a
hg ci -Ama
echo "# missing arg"
hg cat
echo '% [defaults]'
hg cat a
cat >> $HGRCPATH <<EOF
[defaults]
cat = -r null
EOF
hg cat a
echo '% no repo'
cd ..
hg cat
exit 0