Merge branch 'nd/columns'

A couple of commands learn --column option to produce columnar output.

By Nguyễn Thái Ngọc Duy (9) and Zbigniew Jędrzejewski-Szmek (1)
* nd/columns:
  tag: add --column
  column: support piping stdout to external git-column process
  status: add --column
  branch: add --column
  help: reuse print_columns() for help -a
  column: add dense layout support
  t9002: work around shells that are unable to set COLUMNS to 1
  column: add columnar layout
  Stop starting pager recursively
  Add column layout skeleton and git-column

1 files changed, 77 insertions, 0 deletions

diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 9fe1d8fea..a17f8b2a4 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -160,6 +160,83 @@ test_expect_success 'git branch --list -d t should fail' '
 	test_path_is_missing .git/refs/heads/t
 '
 
+test_expect_success 'git branch --column' '
+	COLUMNS=81 git branch --column=column >actual &&
+	cat >expected <<\EOF &&
+  a/b/c     bam       foo       l       * master    n         o/p       r
+  abc       bar       j/k       m/m       master2   o/o       q
+EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'git branch --column with an extremely long branch name' '
+	long=this/is/a/part/of/long/branch/name &&
+	long=z$long/$long/$long/$long &&
+	test_when_finished "git branch -d $long" &&
+	git branch $long &&
+	COLUMNS=80 git branch --column=column >actual &&
+	cat >expected <<EOF &&
+  a/b/c
+  abc
+  bam
+  bar
+  foo
+  j/k
+  l
+  m/m
+* master
+  master2
+  n
+  o/o
+  o/p
+  q
+  r
+  $long
+EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'git branch with column.*' '
+	git config column.ui column &&
+	git config column.branch "dense" &&
+	COLUMNS=80 git branch >actual &&
+	git config --unset column.branch &&
+	git config --unset column.ui &&
+	cat >expected <<\EOF &&
+  a/b/c   bam   foo   l   * master    n     o/p   r
+  abc     bar   j/k   m/m   master2   o/o   q
+EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'git branch --column -v should fail' '
+	test_must_fail git branch --column -v
+'
+
+test_expect_success 'git branch -v with column.ui ignored' '
+	git config column.ui column &&
+	COLUMNS=80 git branch -v | cut -c -10 | sed "s/ *$//" >actual &&
+	git config --unset column.ui &&
+	cat >expected <<\EOF &&
+  a/b/c
+  abc
+  bam
+  bar
+  foo
+  j/k
+  l
+  m/m
+* master
+  master2
+  n
+  o/o
+  o/p
+  q
+  r
+EOF
+	test_cmp expected actual
+'
+
 mv .git/config .git/config-saved
 
 test_expect_success 'git branch -m q q2 without config should succeed' '