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[PATCH] Fix "git checkout -b foo ':/substring'"

From
Junio C Hamano <gitster@pobox.com>
Date
Feb 2, 2008, 03:06 UTC
Message-ID
<7v1w7w6oq7.fsf@gitster.siamese.dyndns.org>

Because ':/substring' extended SHA1 expression cannot take postfix modifiers such as ^{tree} and ^{commit}, we would need to do it in multiple steps. With the patch, you can start a new branch from a randomly-picked commit whose message has the named string in it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 * As we advertize that ":/string" syntax is usable for any
   command that wnats to take a commit object name in the
   Release Notes, we might want to put this in 1.5.4 final.  It
   looks simple and safe enough.
diff --git a/git-checkout.sh b/git-checkout.sh
index 5621c69..bd74d70 100755
--- a/git-checkout.sh
+++ b/git-checkout.sh
@@ -71,7 +71,8 @@ while test $# != 0; do
 done
 
 arg="$1"
-if rev=$(git rev-parse --verify "$arg^0" 2>/dev/null)
+rev=$(git rev-parse --verify "$arg" 2>/dev/null)
+if rev=$(git rev-parse --verify "$rev^0" 2>/dev/null)
 then
 	[ -z "$rev" ] && die "unknown flag $arg"
 	new_name="$arg"
@@ -82,11 +83,11 @@ then
 	fi
 	new="$rev"
 	shift
-elif rev=$(git rev-parse --verify "$arg^{tree}" 2>/dev/null)
+elif rev=$(git rev-parse --verify "$rev^{tree}" 2>/dev/null)
 then
 	# checking out selected paths from a tree-ish.
 	new="$rev"
-	new_name="$arg^{tree}"
+	new_name="$rev^{tree}"
 	shift
 fi
 [ "$1" = "--" ] && shift
Next: Daniel Barkalow
Message 1 of 3 in “Fix "git checkout -b foo ':/substring'"”
  1. Fix "git checkout -b foo ':/substring'"Junio C Hamano, Feb 2, 2008
  2. Daniel BarkalowFeb 2, 2008
  3. Junio C HamanoFeb 2, 2008

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