[PATCH] Minor clarifications to git-filter-branch usage and doc

[Brian Gernhardt <benji@silverinsanity.com>]

- Remove "DESTBRANCH" from usage, as it rewrites the branches given
- Remove an = from an example usage that the script doesn't understand

Signed-off-by: Brian Gernhardt <benji@silverinsanity.com>
---

 It took me way too long to figure out how to just delete a single file
 from the history.

 From the docs and usage it looked I needed
 $ git filter-branch --index-filter \
 	 "git update-index --force-remove file" \
 	 --tag-name-filter=cat newbranch HEAD

 I eventually determined the following
 $ git filter-branch --index-filter \
 	 "git update-index --force-remove file" \
 	 --tag-name-filter cat master

 The following changes changes the parts that led me astray, although I
 think it still could be clearer even if I don't know how to write it.

 Documentation/git-filter-branch.txt |    2 +-
 git-filter-branch.sh                |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/git-filter-branch.txt b/Documentation/git-filter-branch.txt
index 915258f..8c43be6 100644
--- a/Documentation/git-filter-branch.txt
+++ b/Documentation/git-filter-branch.txt
@@ -120,7 +120,7 @@ have all of them as parents.
 	tag name is expected on standard output.
 +
 The original tags are not deleted, but can be overwritten;
-use "--tag-name-filter=cat" to simply update the tags.  In this
+use "--tag-name-filter cat" to simply update the tags.  In this
 case, be very careful and make sure you have the old tags
 backed up in case the conversion has run afoul.
 +
diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index c42e451..9f10c30 100755
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -8,7 +8,7 @@
 # a new branch. You can specify a number of filters to modify the commits,
 # files and trees.
 
-USAGE="git-filter-branch [-d TEMPDIR] [FILTERS] DESTBRANCH [REV-RANGE]"
+USAGE="git-filter-branch [-d TEMPDIR] [FILTERS] [BRANCHES]"
 . git-sh-setup
 
 warn () {
-- 
1.5.3.rc5.11.g312e