#!/bin/sh test_description='diff whitespace error detection' . ./test-lib.sh test_expect_success setup ' git config diff.color.whitespace "blue reverse" && >F && git add F && echo " Eight SP indent" >>F && echo " HT and SP indent" >>F && echo "With trailing SP " >>F && echo "Carriage ReturnQ" | tr Q "\015" >>F && echo "No problem" >>F && echo >>F ' 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 return 0 } test_expect_success default ' prepare_output && grep Eight normal >/dev/null && grep HT error >/dev/null && grep With error >/dev/null && grep Return error >/dev/null && grep No normal >/dev/null ' test_expect_success 'default (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F whitespace" >.gitattributes && prepare_output && grep Eight error >/dev/null && grep HT error >/dev/null && grep With error >/dev/null && grep Return error >/dev/null && grep No normal >/dev/null ' test_expect_success 'default, tabwidth=10 (attribute)' ' git config core.whitespace "tabwidth=10" && echo "F whitespace" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT error >/dev/null && grep With error >/dev/null && grep Return error >/dev/null && grep No normal >/dev/null ' test_expect_success 'no check (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F -whitespace" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT normal >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'no check, tabwidth=10 (attribute), must be irrelevant' ' git config core.whitespace "tabwidth=10" && echo "F -whitespace" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT normal >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'without -trail' ' rm -f .gitattributes && git config core.whitespace -trail && prepare_output && grep Eight normal >/dev/null && grep HT error >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'without -trail (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F whitespace=-trail" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT error >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'without -space' ' rm -f .gitattributes && git config core.whitespace -space && prepare_output && grep Eight normal >/dev/null && grep HT normal >/dev/null && grep With error >/dev/null && grep Return error >/dev/null && grep No normal >/dev/null ' test_expect_success 'without -space (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F whitespace=-space" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT normal >/dev/null && grep With error >/dev/null && grep Return error >/dev/null && grep No normal >/dev/null ' test_expect_success 'with indent-non-tab only' ' rm -f .gitattributes && git config core.whitespace indent,-trailing,-space && prepare_output && grep Eight error >/dev/null && grep HT normal >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'with indent-non-tab only (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F whitespace=indent,-trailing,-space" >.gitattributes && prepare_output && grep Eight error >/dev/null && grep HT normal >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'with indent-non-tab only, tabwidth=10' ' rm -f .gitattributes && git config core.whitespace indent,tabwidth=10,-trailing,-space && prepare_output && grep Eight normal >/dev/null && grep HT normal >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'with indent-non-tab only, tabwidth=10 (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F whitespace=indent,-trailing,-space,tabwidth=10" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT normal >/dev/null && grep With normal >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'with cr-at-eol' ' rm -f .gitattributes && git config core.whitespace cr-at-eol && prepare_output && grep Eight normal >/dev/null && grep HT error >/dev/null && grep With error >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'with cr-at-eol (attribute)' ' test_might_fail git config --unset core.whitespace && echo "F whitespace=trailing,cr-at-eol" >.gitattributes && prepare_output && grep Eight normal >/dev/null && grep HT error >/dev/null && grep With error >/dev/null && grep Return normal >/dev/null && grep No normal >/dev/null ' test_expect_success 'trailing empty lines (1)' ' rm -f .gitattributes && test_must_fail git diff --check >output && grep "new blank line at" output && grep "trailing whitespace" output ' test_expect_success 'trailing empty lines (2)' ' echo "F -whitespace" >.gitattributes && git diff --check >output && ! test -s output ' test_expect_success 'checkdiff shows correct line number for trailing blank lines' ' printf "a\nb\n" > G && git add G && printf "x\nx\nx\na\nb\nc\n\n" > G && [ "$(git diff --check -- G)" = "G:7: new blank line at EOF." ] ' test_expect_success 'do not color trailing cr in context' ' test_might_fail git config --unset core.whitespace && rm -f .gitattributes && echo AAAQ | tr Q "\015" >G && git add G && echo BBBQ | tr Q "\015" >>G && git diff --color G | tr "\015" Q >output && grep "BBB.*${blue_grep}Q" output && grep "AAA.*\[mQ" output ' test_expect_success 'color new trailing blank lines' ' { echo a; echo b; echo; echo; } >x && git add x && { echo a; echo; echo; echo; echo c; echo; echo; echo; echo; } >x && git diff --color x >output && cnt=$($grep_a "${blue_grep}" output | wc -l) && test $cnt = 2 ' test_done