Fixed a bashism with the use of $RANDOM in hgeditor.
The variable $RANDOM is not POSIX so a portable /bin/sh may not define
it. When creating a directory with a random name it's better to use
mktemp, which, even though is not POSIX, exists in common Unixes
including Linux, OpenBSD, FreeBSD and MacOS X.
#!/bin/sh
# test command parsing and dispatch
"$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