When running under MINGW, the native line ending is CRLF and not LF.
Adjust the check of the warnings with macros:
  WLC:  LF become CRLF on non-MINGW
  WCL:  CRLF become LF on non-MINGW
  WMIX: Mixed line endings: either CRLF->LF or LF->CRLF

Improve the information given by check_warning():
Use test_cmp to show which warning is missing (or should'n t be there)

Signed-off-by: Torsten Bögershausen <tbo...@web.de>
---
 t/t0027-auto-crlf.sh | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/t/t0027-auto-crlf.sh b/t/t0027-auto-crlf.sh
index 5858397..59dfe02 100755
--- a/t/t0027-auto-crlf.sh
+++ b/t/t0027-auto-crlf.sh
@@ -57,15 +57,13 @@ create_gitattributes () {
 
 check_warning () {
        case "$1" in
-       LF_CRLF) grep "LF will be replaced by CRLF" $2;;
-       CRLF_LF) grep "CRLF will be replaced by LF" $2;;
-       '')
-               >expect
-               grep "will be replaced by" $2 >actual
-               test_cmp expect actual
-               ;;
-       *) false ;;
+       LF_CRLF) echo "warning: LF will be replaced by CRLF" >"$2".expect ;;
+       CRLF_LF) echo "warning: CRLF will be replaced by LF" >"$2".expect ;;
+       '')                                                      >"$2".expect ;;
+       *) echo >&2 "Illegal 1": "$1" ; return false ;;
        esac
+       grep "will be replaced by" "$2" | sed -e "s/\(.*\) in [^ ]*$/\1/" 
>"$2".actual
+       test_cmp "$2".expect "$2".actual
 }
 
 commit_check_warn () {
@@ -169,6 +167,17 @@ test_expect_success 'setup master' '
 warn_LF_CRLF="LF will be replaced by CRLF"
 warn_CRLF_LF="CRLF will be replaced by LF"
 
+if test_have_prereq MINGW
+then
+WLC=LF_CRLF
+WCL=
+WMIX=LF_CRLF
+else
+WLC=
+WCL=CRLF_LF
+WMIX=CRLF_LF
+fi
+
 test_expect_success 'commit files empty attr' '
        commit_check_warn false ""     ""        ""        ""        ""        
"" &&
        commit_check_warn true  ""     "LF_CRLF" ""        "LF_CRLF" ""        
"" &&
@@ -176,13 +185,13 @@ test_expect_success 'commit files empty attr' '
 '
 
 test_expect_success 'commit files attr=auto' '
-       commit_check_warn false "auto" ""        "CRLF_LF" "CRLF_LF" ""        
"" &&
+       commit_check_warn false "auto" "$WLC"    "$WCL"    "$WMIX"   ""        
"" &&
        commit_check_warn true  "auto" "LF_CRLF" ""        "LF_CRLF" ""        
"" &&
        commit_check_warn input "auto" ""        "CRLF_LF" "CRLF_LF" ""        
""
 '
 
 test_expect_success 'commit files attr=text' '
-       commit_check_warn false "text" ""        "CRLF_LF" "CRLF_LF" ""        
"CRLF_LF" &&
+       commit_check_warn false "text" "$WLC"    "$WCL"    "$WMIX"   "$WLC"    
"$WCL" &&
        commit_check_warn true  "text" "LF_CRLF" ""        "LF_CRLF" "LF_CRLF" 
""        &&
        commit_check_warn input "text" ""        "CRLF_LF" "CRLF_LF" ""        
"CRLF_LF"
 '
-- 
2.2.0.rc1.790.ge19fcd2


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