[PATCH 4/7] add core.column

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This takes auto, never or always to enable column output for
porcelain commands.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Documentation/config.txt |    8 ++++++++
 cache.h                  |    1 +
 config.c                 |   16 ++++++++++++++++
 environment.c            |    1 +
 4 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index c5e1835..6d7151b 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -567,6 +567,14 @@ core.sparseCheckout::
 	Enable "sparse checkout" feature. See section "Sparse checkout" in
 	linkgit:git-read-tree[1] for more information.
 
+core.column::
+	Specify whether a command should output in columns. Only commands
+	that support `--column` will be affected by this. This variable can
+	take either `never` (do not output in columns), `auto` (output in
+	columns if the output is to a terminal) or `always` (always output in
+	columns). Setting `--column` or `--no-column` will override this
+	variable. This option defaults to never.
+
 add.ignore-errors::
 add.ignoreErrors::
 	Tells 'git add' to continue adding files when some files cannot be
diff --git a/cache.h b/cache.h
index bcbd5f2..1fa7656 100644
--- a/cache.h
+++ b/cache.h
@@ -559,6 +559,7 @@ extern int read_replace_refs;
 extern int fsync_object_files;
 extern int core_preload_index;
 extern int core_apply_sparse_checkout;
+extern int core_column;
 
 enum safe_crlf {
 	SAFE_CRLF_FALSE = 0,
diff --git a/config.c b/config.c
index 625e051..071899f 100644
--- a/config.c
+++ b/config.c
@@ -9,6 +9,8 @@
 #include "exec_cmd.h"
 #include "strbuf.h"
 #include "quote.h"
+#include "color.h"
+#include "column.h"
 
 #define MAXNAME (256)
 
@@ -660,6 +662,20 @@ static int git_default_core_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.column")) {
+		switch (git_config_colorbool(var, value, -1)) {
+		case 0:
+			core_column = COL_PLAIN;
+			break;
+		case 1:
+			core_column = COL_COLUMN_FIRST;
+			break;
+		case -1:
+			return -1;
+		}
+		return 0;
+	}
+
 	/* Add other config variables here and to Documentation/config.txt. */
 	return 0;
 }
diff --git a/environment.c b/environment.c
index 9564475..b420ea2 100644
--- a/environment.c
+++ b/environment.c
@@ -56,6 +56,7 @@ char *notes_ref_name;
 int grafts_replace_parents = 1;
 int core_apply_sparse_checkout;
 struct startup_info *startup_info;
+int core_column;
 
 /* Parallel index stat data preload? */
 int core_preload_index = 0;
-- 
1.7.2.2