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/shhg initecho This is file a1 > ahg add ahg commit -m "commit #0" -d "0 0"touch bhg add brm bhg commit -A -m"comment #1" -d "0 0"