hgmerge: fix diff+patch detection; cleanups
Details:
- actually show help message when no tools are found
- whitespace cleanup (stupid emacs)
- quote more variables
- simplify merge/diff3 error handling
#!/bin/sh
hg init
echo foo > a
echo foo > b
hg add a b
hg ci -m "test" -d "0 0"
echo blah > a
hg ci -m "branch a" -d "0 0"
hg co 0
echo blah > b
hg ci -m "branch b" -d "0 0"
HGMERGE=true hg up -m 1
hg ci -m "merge b/a -> blah" -d "0 0"
hg co 1
HGMERGE=true hg up -m 2
hg ci -m "merge a/b -> blah" -d "0 0"
hg log
hg debugindex .hg/00changelog.i
echo
echo 1
hg manifest 1
echo 2
hg manifest 2
echo 3
hg manifest 3
echo 4
hg manifest 4
echo
hg debugindex .hg/data/a.i
hg verify