[PATCH 2/5] lsblk: support -o +<attr> for adding attribute to output fields.

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Signed-off-by: Milan Broz <mbroz@xxxxxxxxxx>
---
 misc-utils/lsblk.c |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/misc-utils/lsblk.c b/misc-utils/lsblk.c
index cb2b768..19c8edd 100644
--- a/misc-utils/lsblk.c
+++ b/misc-utils/lsblk.c
@@ -1213,6 +1213,7 @@ int main(int argc, char *argv[])
 	struct lsblk _ls;
 	int tt_flags = TT_FL_TREE;
 	int i, c, status = EXIT_FAILURE;
+	char *outarg = NULL;
 
 	enum {
 		EXCL_NONE,
@@ -1290,11 +1291,7 @@ int main(int argc, char *argv[])
 			tt_flags |= TT_FL_NOHEADINGS;
 			break;
 		case 'o':
-			ncolumns = string_to_idarray(optarg,
-						columns, ARRAY_SIZE(columns),
-						column_name_to_id);
-			if (ncolumns < 0)
-				return EXIT_FAILURE;
+			outarg = optarg;
 			break;
 		case 'P':
 			exclusive_option(&excl_rlP, EXCL_PAIRS, "--{raw,list,pairs}");
@@ -1363,6 +1360,10 @@ int main(int argc, char *argv[])
 		columns[ncolumns++] = COL_TARGET;
 	}
 
+	if (outarg && string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns),
+					 &ncolumns, column_name_to_id) < 0)
+		return EXIT_FAILURE;
+
 	if (nexcludes == 0 && nincludes == 0)
 		excludes[nexcludes++] = 1;	/* default: ignore RAM disks */
 
-- 
1.7.10.4

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