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
pulling from ../test1
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
(run 'hg update' to get a working copy)
pulling from ../test2
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
(run 'hg update' to get a working copy)
changeset: 2:3ef543305655
tag: tip
parent: 0:22a449e20da5
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: chmod +x a
changeset: 1:c6ecefc45368
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: a updated
changeset: 2:3ef543305655
tag: tip
parent: 0:22a449e20da5
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: chmod +x a
changeset: 1:c6ecefc45368
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: a updated
changeset: 0:22a449e20da5
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: added a b
resolving manifests
merging a
resolving a
-rwxr-x---
-rwxr-x---