From mboxrd@z Thu Jan 1 00:00:00 1970 From: Elia Pinto Subject: [PATCH 08/10] git-mergetool.sh: don't use the -a or -b option with the test command Date: Thu, 15 May 2014 07:17:35 -0700 Message-ID: <1400163457-28285-8-git-send-email-gitter.spiros@gmail.com> References: <1400163457-28285-1-git-send-email-gitter.spiros@gmail.com> Cc: Elia Pinto To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Thu May 15 16:18:00 2014 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WkwTt-0005GT-VT for gcvg-git-2@plane.gmane.org; Thu, 15 May 2014 16:17:58 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755023AbaEOORw (ORCPT ); Thu, 15 May 2014 10:17:52 -0400 Received: from mail-pb0-f49.google.com ([209.85.160.49]:64494 "EHLO mail-pb0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755011AbaEOORu (ORCPT ); Thu, 15 May 2014 10:17:50 -0400 Received: by mail-pb0-f49.google.com with SMTP id jt11so1156345pbb.22 for ; Thu, 15 May 2014 07:17:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=vYbV5zJqnDlBECGYeMI6tMtDlyPhDDLzKL48WJRKDu0=; b=DIovRnhakeD8BRbnP+iG9pZs+sXTdqEp64lN2JBaTHdt2reknN10I48p0Ql/qc3GZU dCZtnFUVvIVM5h708G7rP9sexoJU37AiPS864xg+1JpoxObL1Ee/nQG1iBRIy8+3wXG0 X9pJlYqC/GfYAqQJpfV+oCKezBL8X1NuK745Jq7Qta0yuQKA9nveImsqpQ/sKKGcVv1o 6yby0XJXI2avNmo1hEWB3W0r4ZG9iYD3XrZPdpRHbpI0qp/uY5uNaSQNmy+fJVF/6Uyf IUBmwSCVCQ1VGjq87Dx1QqYFLzX4HZ9kAhOhfxooxwGpZ/+SG+63q9t2ivLbrZZHsbVW Uu3g== X-Received: by 10.66.153.80 with SMTP id ve16mr12625598pab.143.1400163470129; Thu, 15 May 2014 07:17:50 -0700 (PDT) Received: from devzero2000ubu.nephoscale.com (140.195.207.67.nephoscale.net. [67.207.195.140]) by mx.google.com with ESMTPSA id as12sm21782704pac.43.2014.05.15.07.17.49 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 15 May 2014 07:17:49 -0700 (PDT) X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1400163457-28285-1-git-send-email-gitter.spiros@gmail.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Even though POSIX.1 lists -a/-o as options to "test", they are marked "Obsolescent XSI". Scripts using these expressions should be converted as follow: test "$1" -a "$2" should be written as: test "$1" && test "$2" Likewise test "$1" -o "$2" should be written as: test "$1" test "$2" But note that, in test, -a has higher precedence than -o while "&&" and "||" have equal precedence in the shell. The reason for this is that the precedence rules were never well specified, and this made many sane-looking uses of "test -a/-o" problematic. For example, if $x is "=", these work according to POSIX (it's not portable, but in practice it's okay): $ test -z "$x" $ test -z "$x" && test a = b but this doesn't $ test -z "$x" -a a = b bash: test: too many arguments because it groups "test -n = -a" and is left with "a = b". Similarly, if $x is "-f", these $ test "$x" $ test "$x" || test c = d correctly adds an implicit "-n", but this fails: $ test "$x" -o c = d bash: test: too many arguments Signed-off-by: Elia Pinto --- Inspired from this discussion http://permalink.gmane.org/gmane.comp.version-control.git/137056 git-mergetool.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/git-mergetool.sh b/git-mergetool.sh index 332528f..88e853f 100755 --- a/git-mergetool.sh +++ b/git-mergetool.sh @@ -205,7 +205,7 @@ checkout_staged_file () { "$(git checkout-index --temp --stage="$1" "$2" 2>/dev/null)" \ : '\([^ ]*\) ') - if test $? -eq 0 -a -n "$tmpfile" + if test $? -eq 0 && test -n "$tmpfile" then mv -- "$(git rev-parse --show-cdup)$tmpfile" "$3" else @@ -256,7 +256,7 @@ merge_file () { checkout_staged_file 2 "$MERGED" "$LOCAL" checkout_staged_file 3 "$MERGED" "$REMOTE" - if test -z "$local_mode" -o -z "$remote_mode" + if test -z "$local_mode" || test -z "$remote_mode" then echo "Deleted merge conflict for '$MERGED':" describe_file "$local_mode" "local" "$LOCAL" -- 1.7.10.4