[PATCH] Misc documentation fixes and improvements

[Jonas Fonseca <fonseca@diku.dk>]

Fix displaying of an error message when cg-help is called with unknown
command and use $USAGE so the correct cg-help usage string is printed.
Drop useless use of cat in print_help(). Improve the asciidoc markup.

Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
---

diff --git a/cg-Xlib b/cg-Xlib
--- a/cg-Xlib
+++ b/cg-Xlib
@@ -172,7 +172,7 @@ print_help()
 	which "cg-$1" >/dev/null 2>&1 || exit 1
 	sed -n '/^USAGE=/,0s/.*"\(.*\)"/Usage: \1/p' < $(which cg-$1) 
 	echo
-	cat $(which cg-$1) | sed -n '3,/^$/s/^# *//p'
+	sed -n '3,/^$/s/^# *//p' < $(which cg-$1)
 	exit
 }
 
diff --git a/cg-admin-uncommit b/cg-admin-uncommit
--- a/cg-admin-uncommit
+++ b/cg-admin-uncommit
@@ -14,14 +14,14 @@
 # -t::
 #	This optional parameter makes `cg-admin-uncommit` to roll back
 #	the tree as well to the previous commit. Without this option
-#	(by default) Cogito keeps the tree in its current state,
+#	(by default) 'Cogito' keeps the tree in its current state,
 #	therefore generating tree with local changes against the target
 #	commit, consisting of the changes in the rolled back commits.
 #
 # CAVEATS
 # -------
 # This command can be dangerous! It is safe to do as long as you do not
-# push the commit out in the meantime, but you should NEVER uncommit an
+# push the commit out in the meantime, but you should 'NEVER' uncommit an
 # already pushed out commit. Things will break for the pullers since you
 # just broke the fast-forward merging mechanism (the new commit is not
 # descendant of the previous one). The future push scripts will refuse
diff --git a/cg-commit b/cg-commit
--- a/cg-commit
+++ b/cg-commit
@@ -17,7 +17,7 @@
 # -------
 # -C::
 #	Make `cg-commit` ignore the cache and just commit the thing as-is.
-#	Note, this is used internally by Cogito when merging. This option
+#	Note, this is used internally by 'Cogito' when merging. This option
 #	does not make sense when files are given on the command line.
 #
 # -mMESSAGE::
diff --git a/cg-diff b/cg-diff
--- a/cg-diff
+++ b/cg-diff
@@ -3,7 +3,7 @@
 # Make a diff between two GIT trees.
 # Copyright (c) Petr Baudis, 2005
 #
-# Outputs a diff for converting the first tree to the second one.
+# Outputs a diff for converting between two trees.
 # By default compares the current working tree to the state at the
 # last commit. The output will automatically be displayed in a pager
 # unless it is piped to a program.
diff --git a/cg-help b/cg-help
--- a/cg-help
+++ b/cg-help
@@ -14,7 +14,7 @@
 # OPTIONS
 # -------
 # -c::
-#	Colorize to the output.
+#	Colorize the output.
 
 USAGE="cg-help [-c] [cg-COMMAND | COMMAND]"
 _git_repo_unneeded=1
@@ -76,7 +76,8 @@ colorize() {
 
 if [ "$ARGS" ]; then
 	cmd=$(echo "${ARGS[0]}" | sed 's/^cg-//')
-	( print_help $cmd | colorize ) && exit
+	print_help $cmd | colorize
+	[ "${PIPESTATUS[0]}" -eq 0 ] && exit
 	echo "cg-help: no help available for command \"${ARGS[0]}\""
 	echo "Call cg-help without any arguments for the list of available commands"
 	exit 1
@@ -90,7 +91,7 @@ ADVANCED_COMMANDS="$(ls $bin_path/cg-adm
 colorize <<__END__
 The Cogito version control system  $(cg-version)
 
-Usage: cg-COMMAND [ARG]...
+Usage: $USAGE
 
 Available commands:
 $(print_command_listing $REGULAR_COMMANDS)
diff --git a/cg-log b/cg-log
--- a/cg-log
+++ b/cg-log
@@ -14,7 +14,7 @@
 # cg-log then displays only changes in those files.
 #
 # -c::
-#	Colorize to the output. The used colors are listed below together
+#	Colorize the output. The used colors are listed below together
 #	with information about which log output (summary, full or both)
 #	they apply to:
 #		- `author`:	'cyan'		(both)

-- 
Jonas Fonseca