allow command-specific pagers in pager.<cmd>

A user may want different pager settings or even a
different pager for various subcommands (e.g., because they
use different less settings for "log" vs "diff", or because
they have a pager that interprets only log output but not
other commands).

This patch extends the pager.<cmd> syntax to support not
only boolean to-page-or-not-to-page, but also to specify a
pager just for a specific command.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh
index fb744e3c4a..49a6261693 100755
--- a/t/t7006-pager.sh
+++ b/t/t7006-pager.sh
@@ -435,4 +435,33 @@ test_core_pager_subdir    expect_success 'git -p shortlog'
 test_core_pager_subdir    expect_success test_must_fail \
 					 'git -p apply </dev/null'
 
+test_expect_success TTY 'command-specific pager' '
+	unset PAGER GIT_PAGER;
+	echo "foo:initial" >expect &&
+	>actual &&
+	git config --unset core.pager &&
+	git config pager.log "sed s/^/foo:/ >actual" &&
+	test_terminal git log --format=%s -1 &&
+	test_cmp expect actual
+'
+
+test_expect_success TTY 'command-specific pager overrides core.pager' '
+	unset PAGER GIT_PAGER;
+	echo "foo:initial" >expect &&
+	>actual &&
+	git config core.pager "exit 1"
+	git config pager.log "sed s/^/foo:/ >actual" &&
+	test_terminal git log --format=%s -1 &&
+	test_cmp expect actual
+'
+
+test_expect_success TTY 'command-specific pager overridden by environment' '
+	GIT_PAGER="sed s/^/foo:/ >actual" && export GIT_PAGER &&
+	>actual &&
+	echo "foo:initial" >expect &&
+	git config pager.log "exit 1" &&
+	test_terminal git log --format=%s -1 &&
+	test_cmp expect actual
+'
+
 test_done