convert.c: correct attr_action()

df747b8 (convert.c: refactor crlf_action, 2016-02-10) introduced a
bug to "git ls-files --eol".

The "text" attribute was shown as "text eol=lf" or "text eol=crlf",
depending on core.autocrlf or core.eol.

Correct this and add test cases in t0027.

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

convert.c

@@ -708,7 +708,7 @@ static enum crlf_action git_path_check_crlf(struct git_attr_check *check)
 	const char *value = check->value;
 
 	if (ATTR_TRUE(value))
-		return text_eol_is_crlf() ? CRLF_TEXT_CRLF : CRLF_TEXT_INPUT;
+		return CRLF_TEXT;
 	else if (ATTR_FALSE(value))
 		return CRLF_BINARY;
 	else if (ATTR_UNSET(value))
@@ -778,20 +778,20 @@ static void convert_attrs(struct conv_attrs *ca, const char *path)
 	}
 
 	if (!git_check_attr(path, NUM_CONV_ATTRS, ccheck)) {
-		enum eol eol_attr;
 		ca->crlf_action = git_path_check_crlf(ccheck + 4);
 		if (ca->crlf_action == CRLF_UNDEFINED)
 			ca->crlf_action = git_path_check_crlf(ccheck + 0);
 		ca->attr_action = ca->crlf_action;
 		ca->ident = git_path_check_ident(ccheck + 1);
 		ca->drv = git_path_check_convert(ccheck + 2);
-		if (ca->crlf_action == CRLF_BINARY)
-			return;
-		eol_attr = git_path_check_eol(ccheck + 3);
-		if (eol_attr == EOL_LF)
-			ca->crlf_action = CRLF_TEXT_INPUT;
-		else if (eol_attr == EOL_CRLF)
-			ca->crlf_action = CRLF_TEXT_CRLF;
+		if (ca->crlf_action != CRLF_BINARY) {
+			enum eol eol_attr = git_path_check_eol(ccheck + 3);
+			if (eol_attr == EOL_LF)
+				ca->crlf_action = CRLF_TEXT_INPUT;
+			else if (eol_attr == EOL_CRLF)
+				ca->crlf_action = CRLF_TEXT_CRLF;
+		}
+		ca->attr_action = ca->crlf_action;
 	} else {
 		ca->drv = NULL;
 		ca->crlf_action = CRLF_UNDEFINED;

t/t0027-auto-crlf.sh

@@ -159,6 +159,25 @@ stats_ascii () {
 
 }
 
+
+# contruct the attr/ returned by git ls-files --eol
+# Take none (=empty), one or two args
+attr_ascii () {
+	case $1,$2 in
+	-text,*)   echo "-text" ;;
+	text,)     echo "text" ;;
+	text,lf)   echo "text eol=lf" ;;
+	text,crlf) echo "text eol=crlf" ;;
+	auto,)     echo "text=auto" ;;
+	auto,lf)   echo "text=auto eol=lf" ;;
+	auto,crlf) echo "text=auto eol=crlf" ;;
+	lf,)       echo "text eol=lf" ;;
+	crlf,)     echo "text eol=crlf" ;;
+	,) echo "" ;;
+	*) echo invalid_attr "$1,$2" ;;
+	esac
+}
+
 check_files_in_repo () {
 	crlf=$1
 	attr=$2
@@ -228,15 +247,15 @@ checkout_files () {
 	test_expect_success "ls-files --eol attr=$attr $ident $aeol core.autocrlf=$crlf core.eol=$ceol" '
 		test_when_finished "rm expect actual" &&
 		sort <<-EOF >expect &&
-		i/crlf w/$(stats_ascii $crlfname) crlf_false_attr__CRLF.txt
-		i/mixed w/$(stats_ascii $lfmixcrlf) crlf_false_attr__CRLF_mix_LF.txt
-		i/lf w/$(stats_ascii $lfname) crlf_false_attr__LF.txt
-		i/-text w/$(stats_ascii $lfmixcr) crlf_false_attr__LF_mix_CR.txt
-		i/-text w/$(stats_ascii $crlfnul) crlf_false_attr__CRLF_nul.txt
-		i/-text w/$(stats_ascii $crlfnul) crlf_false_attr__LF_nul.txt
+		i/crlf w/$(stats_ascii $crlfname) attr/$(attr_ascii $attr $aeol) crlf_false_attr__CRLF.txt
+		i/mixed w/$(stats_ascii $lfmixcrlf) attr/$(attr_ascii $attr $aeol) crlf_false_attr__CRLF_mix_LF.txt
+		i/lf w/$(stats_ascii $lfname) attr/$(attr_ascii $attr $aeol) crlf_false_attr__LF.txt
+		i/-text w/$(stats_ascii $lfmixcr) attr/$(attr_ascii $attr $aeol) crlf_false_attr__LF_mix_CR.txt
+		i/-text w/$(stats_ascii $crlfnul) attr/$(attr_ascii $attr $aeol) crlf_false_attr__CRLF_nul.txt
+		i/-text w/$(stats_ascii $crlfnul) attr/$(attr_ascii $attr $aeol) crlf_false_attr__LF_nul.txt
 		EOF
 		git ls-files --eol crlf_false_attr__* |
-		sed -e "s!attr/[^	]*!!g" -e "s/	/ /g" -e "s/  */ /g" |
+		sed -e "s/	/ /g" -e "s/  */ /g" |
 		sort >actual &&
 		test_cmp expect actual
 	'