Makes git work with a pure POSIX shell (tested with bash --posix and ash).
Right now git causes ash to choke on the redundant shift on line two.

Reduces the number of system calls git makes just to do a usage
statement from 22610 to 1122, and the runtime for same from 349ms to
29ms on my x86 Linux box. 

Presents a standard usage statement, and pretty prints the available
commands in a form that does not scroll off small terminals.

Signed-off-by: Amos Waterland <[EMAIL PROTECTED]>


 git |   27 +++++++++++++--------------
 1 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/git b/git
--- a/git
+++ b/git
@@ -1,19 +1,18 @@
-if which git-$cmd-script >& /dev/null
-       exec git-$cmd-script "$@"
+path=$(dirname $0)
-if which git-$cmd >& /dev/null
-       exec git-$cmd "$@"
+test -x $path/git-$cmd-script && exec $path/git-$cmd-script "$@"
+test -x $path/git-$cmd && exec $path/git-$cmd "$@"
-alternatives=($(echo $PATH | tr ':' '\n' | while read i; do ls $i/git-*-script 
2> /dev/null; done))
+echo "Usage: git COMMAND [OPTIONS] [TARGET]"
+if [ -n "$cmd" ]; then
+    echo " git command '$cmd' not found: commands are:"
+    echo " git commands are:"
-echo Git command "'$cmd'" not found. Try one of
-for i in "[EMAIL PROTECTED]"; do
-       echo $i | sed 's:^.*/git-:   :' | sed 's:-script$::'
-done | sort | uniq
+alternatives=$(cd $path &&
+               ls git-*-script | sed -e 's/git-//' -e 's/-script//')
+echo $alternatives | fmt | sed 's/^/  /'

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