[PATCH] t4019 "grep" portability fix
- From
Junio C Hamano <gitster@pobox.com>
- Date
- Dec 26, 2009, 21:53 UTC
- Message-ID
- <7vvdftxv02.fsf@alter.siamese.dyndns.org>
Input to "grep" is supposed to be "text", but we deliberately feed output from "git diff --color" to sift it into two sets of lines (ones with errors, the other without). Some implementations of "grep" only report matches with the exit status, without showing the matched lines in their output (e.g. OpenBSD 4.6, which says "Binary file .. matches").
Fortunately, "grep -a" is often a way to force the command to treat its input as text.
Signed-off-by: Junio C Hamano <gitster@pobox.com> --- t/t4019-diff-wserror.sh | 56 +++++++++++++++++++++++----------------------- 1 files changed, 28 insertions(+), 28 deletions(-)
diff --git a/t/t4019-diff-wserror.sh b/t/t4019-diff-wserror.sh index 3a3663f..f6d1f1e 100755 --- a/t/t4019-diff-wserror.sh +++ b/t/t4019-diff-wserror.sh @@ -20,11 +20,27 @@ test_expect_success setup ' blue_grep='7;34m' ;# ESC [ 7 ; 3 4 m +printf "\033[%s" "$blue_grep" >check-grep +if (grep "$blue_grep" <check-grep | grep "$blue_grep") >/dev/null 2>&1 +then + grep_a=grep +elif (grep -a "$blue_grep" <check-grep | grep -a "$blue_grep") >/dev/null 2>&1 +then + grep_a='grep -a' +else + grep_a=grep ;# expected to fail... +fi +rm -f check-grep + +prepare_output () { + git diff --color >output + $grep_a "$blue_grep" output >error + $grep_a -v "$blue_grep" output >normal +} + test_expect_success default ' - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT error >/dev/null && @@ -37,9 +53,7 @@ test_expect_success default ' test_expect_success 'without -trail' ' git config core.whitespace -trail - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT error >/dev/null && @@ -53,9 +67,7 @@ test_expect_success 'without -trail (attribute)' ' git config --unset core.whitespace echo "F whitespace=-trail" >.gitattributes - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT error >/dev/null && @@ -69,9 +81,7 @@ test_expect_success 'without -space' ' rm -f .gitattributes git config core.whitespace -space - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT normal >/dev/null && @@ -85,9 +95,7 @@ test_expect_success 'without -space (attribute)' ' git config --unset core.whitespace echo "F whitespace=-space" >.gitattributes - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT normal >/dev/null && @@ -101,9 +109,7 @@ test_expect_success 'with indent-non-tab only' ' rm -f .gitattributes git config core.whitespace indent,-trailing,-space - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight error >/dev/null && grep HT normal >/dev/null && @@ -117,9 +123,7 @@ test_expect_success 'with indent-non-tab only (attribute)' ' git config --unset core.whitespace echo "F whitespace=indent,-trailing,-space" >.gitattributes - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight error >/dev/null && grep HT normal >/dev/null && @@ -133,9 +137,7 @@ test_expect_success 'with cr-at-eol' ' rm -f .gitattributes git config core.whitespace cr-at-eol - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT error >/dev/null && @@ -149,9 +151,7 @@ test_expect_success 'with cr-at-eol (attribute)' ' git config --unset core.whitespace echo "F whitespace=trailing,cr-at-eol" >.gitattributes - git diff --color >output - grep "$blue_grep" output >error - grep -v "$blue_grep" output >normal + prepare_output grep Eight normal >/dev/null && grep HT error >/dev/null && @@ -195,7 +195,7 @@ test_expect_success 'color new trailing blank lines' ' git add x && { echo a; echo; echo; echo; echo c; echo; echo; echo; echo; } >x && git diff --color x >output && - cnt=$(grep "${blue_grep}" output | wc -l) && + cnt=$($grep_a "${blue_grep}" output | wc -l) && test $cnt = 2 '