test: Added error handling to hex_to_rgb

2018-06-23 09:51:39 +10:00
parent cf243bc86b
commit 809c8b5a03
2 changed files with 8 additions and 7 deletions
--- a/README.md
+++ b/README.md
@@ -1585,10 +1585,8 @@ $ get_cursor_pos
 ```sh
 hex_to_rgb() {
    # Usage: hex_to_rgb "#FFFFFF"
-    ((r=16#${1:1:2}))
-    ((g=16#${1:3:2}))
-    ((b=16#${1:5:6}))
-
+    : "${1/\#}"
+    ((r=16#${_:0:2},g=16#${_:2:2},b=16#${_:4:2}))
    printf '%s\n' "$r $g $b"
 }
 ```