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diff --git a/t/t4203-mailmap.sh b/t/t4203-mailmap.sh
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+++ b/t/t4203-mailmap.sh
@@ -0,0 +1,1025 @@
+#!/bin/sh
+
+test_description='.mailmap configurations'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+
+test_expect_success 'setup commits and contacts file' '
+ test_commit initial one one &&
+ test_commit --author "nick1 <bugs@company.xx>" --append second one two
+'
+
+test_expect_success 'check-mailmap no arguments' '
+ test_must_fail git check-mailmap
+'
+
+test_expect_success 'check-mailmap arguments' '
+ cat >expect <<-EOF &&
+ $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ nick1 <bugs@company.xx>
+ EOF
+ git check-mailmap \
+ "$GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>" \
+ "nick1 <bugs@company.xx>" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'check-mailmap --stdin' '
+ cat >expect <<-EOF &&
+ $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ nick1 <bugs@company.xx>
+ EOF
+ git check-mailmap --stdin <expect >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'check-mailmap --stdin arguments: no mapping' '
+ test_when_finished "rm contacts" &&
+ cat >contacts <<-EOF &&
+ $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ nick1 <bugs@company.xx>
+ EOF
+ cat >expect <<-\EOF &&
+ Internal Guy <bugs@company.xy>
+ EOF
+ cat contacts >>expect &&
+
+ git check-mailmap --stdin "Internal Guy <bugs@company.xy>" \
+ <contacts >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'check-mailmap --stdin arguments: mapping' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ New Name <$GIT_AUTHOR_EMAIL>
+ EOF
+ cat >stdin <<-EOF &&
+ Old Name <$GIT_AUTHOR_EMAIL>
+ EOF
+
+ cp .mailmap expect &&
+ git check-mailmap --stdin <stdin >actual &&
+ test_cmp expect actual &&
+
+ cat .mailmap >>expect &&
+ git check-mailmap --stdin "Another Old Name <$GIT_AUTHOR_EMAIL>" \
+ <stdin >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'check-mailmap bogus contact' '
+ test_must_fail git check-mailmap bogus
+'
+
+test_expect_success 'check-mailmap bogus contact --stdin' '
+ test_must_fail git check-mailmap --stdin bogus </dev/null
+'
+
+test_expect_success 'No mailmap' '
+ cat >expect <<-EOF &&
+ $GIT_AUTHOR_NAME (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'setup default .mailmap' '
+ cat >default.map <<-EOF
+ Repo Guy <$GIT_AUTHOR_EMAIL>
+ EOF
+'
+
+test_expect_success 'test default .mailmap' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ cat >expect <<-\EOF &&
+ Repo Guy (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.file set' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ test_config mailmap.file internal.map &&
+ cat >internal.map <<-\EOF &&
+ Internal Guy <bugs@company.xx>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Internal Guy (1):
+ second
+
+ Repo Guy (1):
+ initial
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual &&
+
+ # The internal_mailmap/.mailmap file is an a subdirectory, but
+ # as shown here it can also be outside the repository
+ test_when_finished "rm -rf sub-repo" &&
+ git clone . sub-repo &&
+ (
+ cd sub-repo &&
+ cp ../.mailmap . &&
+ git config mailmap.file ../internal.map &&
+ git shortlog HEAD >actual &&
+ test_cmp ../expect actual
+ )
+'
+
+test_expect_success 'mailmap.file override' '
+ test_config mailmap.file internal.map &&
+ cat >internal.map <<-EOF &&
+ Internal Guy <bugs@company.xx>
+ External Guy <$GIT_AUTHOR_EMAIL>
+ EOF
+
+ cat >expect <<-\EOF &&
+ External Guy (1):
+ initial
+
+ Internal Guy (1):
+ second
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.file non-existent' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ cat >expect <<-\EOF &&
+ Repo Guy (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'name entry after email entry' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ test_config mailmap.file internal.map &&
+ cat >internal.map <<-\EOF &&
+ <bugs@company.xy> <bugs@company.xx>
+ Internal Guy <bugs@company.xx>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Internal Guy (1):
+ second
+
+ Repo Guy (1):
+ initial
+
+ EOF
+
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'name entry after email entry, case-insensitive' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ test_config mailmap.file internal.map &&
+ cat >internal.map <<-\EOF &&
+ <bugs@company.xy> <bugs@company.xx>
+ Internal Guy <BUGS@Company.xx>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Internal Guy (1):
+ second
+
+ Repo Guy (1):
+ initial
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual &&
+
+ cat >internal.map <<-\EOF &&
+ NiCk <BuGs@CoMpAnY.Xy> NICK1 <BUGS@COMPANY.XX>
+ EOF
+
+ cat >expect <<-\EOF &&
+ NiCk (1):
+ second
+
+ Repo Guy (1):
+ initial
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'No mailmap files, but configured' '
+ cat >expect <<-EOF &&
+ $GIT_AUTHOR_NAME (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'setup mailmap blob tests' '
+ git checkout -b map &&
+ test_when_finished "git checkout main" &&
+ cat >just-bugs <<-\EOF &&
+ Blob Guy <bugs@company.xx>
+ EOF
+ cat >both <<-EOF &&
+ Blob Guy <$GIT_AUTHOR_EMAIL>
+ Blob Guy <bugs@company.xx>
+ EOF
+ printf "Tricky Guy <$GIT_AUTHOR_EMAIL>" >no-newline &&
+ git add just-bugs both no-newline &&
+ git commit -m "my mailmaps" &&
+
+ cat >internal.map <<-EOF
+ Internal Guy <$GIT_AUTHOR_EMAIL>
+ EOF
+'
+
+test_expect_success 'mailmap.blob set' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ cat >expect <<-\EOF &&
+ Blob Guy (1):
+ second
+
+ Repo Guy (1):
+ initial
+
+ EOF
+ git -c mailmap.blob=map:just-bugs shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.blob overrides .mailmap' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ cat >expect <<-\EOF &&
+ Blob Guy (2):
+ initial
+ second
+
+ EOF
+ git -c mailmap.blob=map:both shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.file overrides mailmap.blob' '
+ cat >expect <<-\EOF &&
+ Blob Guy (1):
+ second
+
+ Internal Guy (1):
+ initial
+
+ EOF
+ git \
+ -c mailmap.blob=map:both \
+ -c mailmap.file=internal.map \
+ shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.file can be missing' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ test_config mailmap.file nonexistent &&
+ cat >expect <<-\EOF &&
+ Repo Guy (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git shortlog HEAD >actual 2>err &&
+ test_must_be_empty err &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.blob can be missing' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ cat >expect <<-\EOF &&
+ Repo Guy (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git -c mailmap.blob=map:nonexistent shortlog HEAD >actual 2>err &&
+ test_must_be_empty err &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.blob might be the wrong type' '
+ test_when_finished "rm .mailmap" &&
+ cp default.map .mailmap &&
+
+ git -c mailmap.blob=HEAD: shortlog HEAD >actual 2>err &&
+ test_i18ngrep "mailmap is not a blob" err &&
+ test_cmp expect actual
+'
+
+test_expect_success 'mailmap.blob defaults to off in non-bare repo' '
+ git init non-bare &&
+ (
+ cd non-bare &&
+ test_commit one .mailmap "Fake Name <$GIT_AUTHOR_EMAIL>" &&
+ cat >expect <<-\EOF &&
+ 1 Fake Name
+ EOF
+ git shortlog -ns HEAD >actual &&
+ test_cmp expect actual &&
+ rm .mailmap &&
+ cat >expect <<-EOF &&
+ 1 $GIT_AUTHOR_NAME
+ EOF
+ git shortlog -ns HEAD >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'mailmap.blob defaults to HEAD:.mailmap in bare repo' '
+ git clone --bare non-bare bare &&
+ (
+ cd bare &&
+ cat >expect <<-\EOF &&
+ 1 Fake Name
+ EOF
+ git shortlog -ns HEAD >actual &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'mailmap.blob can handle blobs without trailing newline' '
+ cat >expect <<-\EOF &&
+ Tricky Guy (1):
+ initial
+
+ nick1 (1):
+ second
+
+ EOF
+ git -c mailmap.blob=map:no-newline shortlog HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'single-character name' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ A <$GIT_AUTHOR_EMAIL>
+ EOF
+
+ cat >expect <<-EOF &&
+ 1 A <$GIT_AUTHOR_EMAIL>
+ 1 nick1 <bugs@company.xx>
+ EOF
+ git shortlog -es HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'preserve canonical email case' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ <AUTHOR@example.com> <$GIT_AUTHOR_EMAIL>
+ EOF
+
+ cat >expect <<-EOF &&
+ 1 $GIT_AUTHOR_NAME <AUTHOR@example.com>
+ 1 nick1 <bugs@company.xx>
+ EOF
+ git shortlog -es HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'gitmailmap(5) example output: setup' '
+ test_create_repo doc &&
+ test_commit -C doc --author "Joe Developer <joe@example.com>" A &&
+ test_commit -C doc --author "Joe R. Developer <joe@example.com>" B &&
+ test_commit -C doc --author "Jane Doe <jane@example.com>" C &&
+ test_commit -C doc --author "Jane Doe <jane@laptop.(none)>" D &&
+ test_commit -C doc --author "Jane D. <jane@desktop.(none)>" E
+'
+
+test_expect_success 'gitmailmap(5) example output: example #1' '
+ test_config -C doc mailmap.file ../doc.map &&
+ cat >doc.map <<-\EOF &&
+ Joe R. Developer <joe@example.com>
+ Jane Doe <jane@example.com>
+ Jane Doe <jane@desktop.(none)>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Author Joe Developer <joe@example.com> maps to Joe R. Developer <joe@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Joe R. Developer <joe@example.com> maps to Joe R. Developer <joe@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane Doe <jane@example.com> maps to Jane Doe <jane@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane Doe <jane@laptop.(none)> maps to Jane Doe <jane@laptop.(none)>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane D <jane@desktop.(none)> maps to Jane Doe <jane@desktop.(none)>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+ EOF
+ git -C doc log --reverse --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'gitmailmap(5) example output: example #2' '
+ test_config -C doc mailmap.file ../doc.map &&
+ cat >doc.map <<-\EOF &&
+ Joe R. Developer <joe@example.com>
+ Jane Doe <jane@example.com> <jane@laptop.(none)>
+ Jane Doe <jane@example.com> <jane@desktop.(none)>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Author Joe Developer <joe@example.com> maps to Joe R. Developer <joe@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Joe R. Developer <joe@example.com> maps to Joe R. Developer <joe@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane Doe <jane@example.com> maps to Jane Doe <jane@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane Doe <jane@laptop.(none)> maps to Jane Doe <jane@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane D <jane@desktop.(none)> maps to Jane Doe <jane@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+ EOF
+ git -C doc log --reverse --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'gitmailmap(5) example output: example #3' '
+ test_config -C doc mailmap.file ../doc.map &&
+ cat >>doc.map <<-\EOF &&
+ Joe R. Developer <joe@example.com> Joe <bugs@example.com>
+ Jane Doe <jane@example.com> Jane <bugs@example.com>
+ EOF
+
+ test_commit -C doc --author "Joe <bugs@example.com>" F &&
+ test_commit -C doc --author "Jane <bugs@example.com>" G &&
+
+ cat >>expect <<-\EOF &&
+
+ Author Joe <bugs@example.com> maps to Joe R. Developer <joe@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author Jane <bugs@example.com> maps to Jane Doe <jane@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+ EOF
+ git -C doc log --reverse --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+
+test_expect_success 'Shortlog output (complex mapping)' '
+ test_config mailmap.file complex.map &&
+ cat >complex.map <<-EOF &&
+ Committed <$GIT_COMMITTER_EMAIL>
+ <cto@company.xx> <cto@coompany.xx>
+ Some Dude <some@dude.xx> nick1 <bugs@company.xx>
+ Other Author <other@author.xx> nick2 <bugs@company.xx>
+ Other Author <other@author.xx> <nick2@company.xx>
+ Santa Claus <santa.claus@northpole.xx> <me@company.xx>
+ EOF
+
+ test_commit --author "nick2 <bugs@company.xx>" --append third one three &&
+ test_commit --author "nick2 <nick2@company.xx>" --append fourth one four &&
+ test_commit --author "santa <me@company.xx>" --append fifth one five &&
+ test_commit --author "claus <me@company.xx>" --append sixth one six &&
+ test_commit --author "CTO <cto@coompany.xx>" --append seventh one seven &&
+
+ cat >expect <<-EOF &&
+ $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL> (1):
+ initial
+
+ CTO <cto@company.xx> (1):
+ seventh
+
+ Other Author <other@author.xx> (2):
+ third
+ fourth
+
+ Santa Claus <santa.claus@northpole.xx> (2):
+ fifth
+ sixth
+
+ Some Dude <some@dude.xx> (1):
+ second
+
+ EOF
+
+ git shortlog -e HEAD >actual &&
+ test_cmp expect actual
+
+'
+
+test_expect_success 'Log output (complex mapping)' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-EOF &&
+ Author CTO <cto@coompany.xx> maps to CTO <cto@company.xx>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+
+ Author claus <me@company.xx> maps to Santa Claus <santa.claus@northpole.xx>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+
+ Author santa <me@company.xx> maps to Santa Claus <santa.claus@northpole.xx>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+
+ Author nick2 <nick2@company.xx> maps to Other Author <other@author.xx>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+
+ Author nick2 <bugs@company.xx> maps to Other Author <other@author.xx>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+
+ Author nick1 <bugs@company.xx> maps to Some Dude <some@dude.xx>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+
+ Author $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL> maps to $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ Committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> maps to Committed <$GIT_COMMITTER_EMAIL>
+ EOF
+
+ git log --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'Log output (local-part email address)' '
+ cat >expect <<-EOF &&
+ Author email cto@coompany.xx has local-part cto
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+
+ Author email me@company.xx has local-part me
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+
+ Author email me@company.xx has local-part me
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+
+ Author email nick2@company.xx has local-part nick2
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+
+ Author email bugs@company.xx has local-part bugs
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+
+ Author email bugs@company.xx has local-part bugs
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+
+ Author email author@example.com has local-part author
+ Committer email $GIT_COMMITTER_EMAIL has local-part $TEST_COMMITTER_LOCALNAME
+ EOF
+
+ git log --pretty=format:"Author email %ae has local-part %al%nCommitter email %ce has local-part %cl%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'Log output with --use-mailmap' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-EOF &&
+ Author: CTO <cto@company.xx>
+ Author: Santa Claus <santa.claus@northpole.xx>
+ Author: Santa Claus <santa.claus@northpole.xx>
+ Author: Other Author <other@author.xx>
+ Author: Other Author <other@author.xx>
+ Author: Some Dude <some@dude.xx>
+ Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ EOF
+
+ git log --use-mailmap >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'Log output with log.mailmap' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-EOF &&
+ Author: CTO <cto@company.xx>
+ Author: Santa Claus <santa.claus@northpole.xx>
+ Author: Santa Claus <santa.claus@northpole.xx>
+ Author: Other Author <other@author.xx>
+ Author: Other Author <other@author.xx>
+ Author: Some Dude <some@dude.xx>
+ Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ EOF
+
+ git -c log.mailmap=True log >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'log.mailmap=false disables mailmap' '
+ cat >expect <<-EOF &&
+ Author: CTO <cto@coompany.xx>
+ Author: claus <me@company.xx>
+ Author: santa <me@company.xx>
+ Author: nick2 <nick2@company.xx>
+ Author: nick2 <bugs@company.xx>
+ Author: nick1 <bugs@company.xx>
+ Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ EOF
+ git -c log.mailmap=false log >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--no-use-mailmap disables mailmap' '
+ cat >expect <<-EOF &&
+ Author: CTO <cto@coompany.xx>
+ Author: claus <me@company.xx>
+ Author: santa <me@company.xx>
+ Author: nick2 <nick2@company.xx>
+ Author: nick2 <bugs@company.xx>
+ Author: nick1 <bugs@company.xx>
+ Author: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>
+ EOF
+ git log --no-use-mailmap >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'Grep author with --use-mailmap' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-\EOF &&
+ Author: Santa Claus <santa.claus@northpole.xx>
+ Author: Santa Claus <santa.claus@northpole.xx>
+ EOF
+ git log --use-mailmap --author Santa >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'Grep author with log.mailmap' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-\EOF &&
+ Author: Santa Claus <santa.claus@northpole.xx>
+ Author: Santa Claus <santa.claus@northpole.xx>
+ EOF
+
+ git -c log.mailmap=True log --author Santa >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'log.mailmap is true by default these days' '
+ test_config mailmap.file complex.map &&
+ git log --author Santa >log &&
+ grep Author log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'Only grep replaced author with --use-mailmap' '
+ test_config mailmap.file complex.map &&
+ git log --use-mailmap --author "<cto@coompany.xx>" >actual &&
+ test_must_be_empty actual
+'
+
+test_expect_success 'Blame --porcelain output (complex mapping)' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-EOF &&
+ 1 1 1
+ A U Thor
+ 2 2 1
+ Some Dude
+ 3 3 1
+ Other Author
+ 4 4 1
+ Other Author
+ 5 5 1
+ Santa Claus
+ 6 6 1
+ Santa Claus
+ 7 7 1
+ CTO
+ EOF
+
+ git blame --porcelain one >actual.blame &&
+
+ NUM="[0-9][0-9]*" &&
+ sed -n <actual.blame >actual.fuzz \
+ -e "s/^author //p" \
+ -e "s/^$OID_REGEX \\($NUM $NUM $NUM\\)$/\\1/p" &&
+ test_cmp expect actual.fuzz
+'
+
+test_expect_success 'Blame output (complex mapping)' '
+ git -c mailmap.file=complex.map blame one >a &&
+ git blame one >b &&
+ test_file_not_empty a &&
+ ! cmp a b
+'
+
+test_expect_success 'commit --author honors mailmap' '
+ test_config mailmap.file complex.map &&
+
+ cat >expect <<-\EOF &&
+ Some Dude <some@dude.xx>
+ EOF
+
+ test_must_fail git commit --author "nick" --allow-empty -meight &&
+ git commit --author "Some Dude" --allow-empty -meight &&
+ git show --pretty=format:"%an <%ae>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'comment syntax: setup' '
+ test_create_repo comm &&
+ test_commit -C comm --author "A <a@example.com>" A &&
+ test_commit -C comm --author "B <b@example.com>" B &&
+ test_commit -C comm --author "C <#@example.com>" C &&
+ test_commit -C comm --author "D <d@e#ample.com>" D &&
+
+ test_config -C comm mailmap.file ../doc.map &&
+ cat >>doc.map <<-\EOF &&
+ # Ah <a@example.com>
+
+ ; Bee <b@example.com>
+ Cee <cee@example.com> <#@example.com>
+ Dee <dee@example.com> <d@e#ample.com>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Author A <a@example.com> maps to A <a@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author B <b@example.com> maps to ; Bee <b@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author C <#@example.com> maps to Cee <cee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author D <d@e#ample.com> maps to Dee <dee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+ EOF
+ git -C comm log --reverse --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'whitespace syntax: setup' '
+ test_create_repo space &&
+ test_commit -C space --author "A <a@example.com>" A &&
+ test_commit -C space --author "B <b@example.com>" B &&
+ test_commit -C space --author " C <c@example.com>" C &&
+ test_commit -C space --author " D <d@example.com>" D &&
+ test_commit -C space --author "E E <e@example.com>" E &&
+ test_commit -C space --author "F F <f@example.com>" F &&
+ test_commit -C space --author "G G <g@example.com>" G &&
+ test_commit -C space --author "H H <h@example.com>" H &&
+
+ test_config -C space mailmap.file ../space.map &&
+ cat >>space.map <<-\EOF &&
+ Ah <ah@example.com> < a@example.com >
+ Bee <bee@example.com > < b@example.com >
+ Cee <cee@example.com> C <c@example.com>
+ dee <dee@example.com> D <d@example.com>
+ eee <eee@example.com> E E <e@example.com>
+ eff <eff@example.com> F F <f@example.com>
+ gee <gee@example.com> G G <g@example.com>
+ aitch <aitch@example.com> H H <h@example.com>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Author A <a@example.com> maps to A <a@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author B <b@example.com> maps to B <b@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author C <c@example.com> maps to Cee <cee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author D <d@example.com> maps to dee <dee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author E E <e@example.com> maps to eee <eee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author F F <f@example.com> maps to eff <eff@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author G G <g@example.com> maps to gee <gee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author H H <h@example.com> maps to H H <h@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+ EOF
+ git -C space log --reverse --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'empty syntax: setup' '
+ test_create_repo empty &&
+ test_commit -C empty --author "A <>" A &&
+ test_commit -C empty --author "B <b@example.com>" B &&
+ test_commit -C empty --author "C <c@example.com>" C &&
+
+ test_config -C empty mailmap.file ../empty.map &&
+ cat >>empty.map <<-\EOF &&
+ Ah <ah@example.com> <>
+ Bee <bee@example.com> <>
+ Cee <> <c@example.com>
+ EOF
+
+ cat >expect <<-\EOF &&
+ Author A <> maps to Bee <bee@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author B <b@example.com> maps to B <b@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+
+ Author C <c@example.com> maps to C <c@example.com>
+ Committer C O Mitter <committer@example.com> maps to C O Mitter <committer@example.com>
+ EOF
+ git -C empty log --reverse --pretty=format:"Author %an <%ae> maps to %aN <%aE>%nCommitter %cn <%ce> maps to %cN <%cE>%n" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'set up mailmap location tests' '
+ git init --bare loc-bare &&
+ git --git-dir=loc-bare --work-tree=. commit \
+ --allow-empty -m foo --author="Orig <orig@example.com>" &&
+ echo "New <new@example.com> <orig@example.com>" >loc-bare/.mailmap
+'
+
+test_expect_success 'bare repo with --work-tree finds mailmap at top-level' '
+ git -C loc-bare --work-tree=. log -1 --format=%aE >actual &&
+ echo new@example.com >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'bare repo does not look in current directory' '
+ git -C loc-bare log -1 --format=%aE >actual &&
+ echo orig@example.com >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'non-git shortlog respects mailmap in current dir' '
+ git --git-dir=loc-bare log -1 >input &&
+ nongit cp "$TRASH_DIRECTORY/loc-bare/.mailmap" . &&
+ nongit git shortlog -s <input >actual &&
+ echo " 1 New" >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'shortlog on stdin respects mailmap from repo' '
+ cp loc-bare/.mailmap . &&
+ git shortlog -s <input >actual &&
+ echo " 1 New" >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'find top-level mailmap from subdir' '
+ git clone loc-bare loc-wt &&
+ cp loc-bare/.mailmap loc-wt &&
+ mkdir loc-wt/subdir &&
+ git -C loc-wt/subdir log -1 --format=%aE >actual &&
+ echo new@example.com >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success SYMLINKS 'set up symlink tests' '
+ git commit --allow-empty -m foo --author="Orig <orig@example.com>" &&
+ echo "New <new@example.com> <orig@example.com>" >map &&
+ rm -f .mailmap
+'
+
+test_expect_success SYMLINKS 'symlinks respected in mailmap.file' '
+ test_when_finished "rm symlink" &&
+ ln -s map symlink &&
+ git -c mailmap.file="$(pwd)/symlink" log -1 --format=%aE >actual &&
+ echo "new@example.com" >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success SYMLINKS 'symlinks respected in non-repo shortlog' '
+ git log -1 >input &&
+ test_when_finished "nongit rm .mailmap" &&
+ nongit ln -sf "$TRASH_DIRECTORY/map" .mailmap &&
+ nongit git shortlog -s <input >actual &&
+ echo " 1 New" >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success SYMLINKS 'symlinks not respected in-tree' '
+ test_when_finished "rm .mailmap" &&
+ ln -s map .mailmap &&
+ git log -1 --format=%aE >actual &&
+ echo "orig@example.com" >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'prepare for cat-file --mailmap' '
+ rm -f .mailmap &&
+ git commit --allow-empty -m foo --author="Orig <orig@example.com>"
+'
+
+test_expect_success '--no-use-mailmap disables mailmap in cat-file' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ A U Thor <author@example.com> Orig <orig@example.com>
+ EOF
+ cat >expect <<-EOF &&
+ author Orig <orig@example.com>
+ EOF
+ git cat-file --no-use-mailmap commit HEAD >log &&
+ sed -n "/^author /s/\([^>]*>\).*/\1/p" log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--use-mailmap enables mailmap in cat-file' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ A U Thor <author@example.com> Orig <orig@example.com>
+ EOF
+ cat >expect <<-EOF &&
+ author A U Thor <author@example.com>
+ EOF
+ git cat-file --use-mailmap commit HEAD >log &&
+ sed -n "/^author /s/\([^>]*>\).*/\1/p" log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--no-mailmap disables mailmap in cat-file for annotated tag objects' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ Orig <orig@example.com> C O Mitter <committer@example.com>
+ EOF
+ cat >expect <<-EOF &&
+ tagger C O Mitter <committer@example.com>
+ EOF
+ git tag -a -m "annotated tag" v1 &&
+ git cat-file --no-mailmap -p v1 >log &&
+ sed -n "/^tagger /s/\([^>]*>\).*/\1/p" log >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--mailmap enables mailmap in cat-file for annotated tag objects' '
+ test_when_finished "rm .mailmap" &&
+ cat >.mailmap <<-EOF &&
+ Orig <orig@example.com> C O Mitter <committer@example.com>
+ EOF
+ cat >expect <<-EOF &&
+ tagger Orig <orig@example.com>
+ EOF
+ git tag -a -m "annotated tag" v2 &&
+ git cat-file --mailmap -p v2 >log &&
+ sed -n "/^tagger /s/\([^>]*>\).*/\1/p" log >actual &&
+ test_cmp expect actual
+'
+
+test_done
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-15 19:42:35 +0000