1 files changed, 49 insertions, 0 deletions
diff --git a/share/functions/contains.fish b/share/functions/contains.fish
new file mode 100644
index 00000000..331794c7
--- /dev/null
+++ b/share/functions/contains.fish
@@ -0,0 +1,49 @@
+#
+# This file defines various shellscript functions. Most of them are
+# meant to be used directly by the user, but some of them, typically
+# the ones whose name start with '__fish_', are only meant to be used
+# internally by fish.
+#
+
+function contains -d (_ "Test if a key is contained in a set of values")
+	while set -q argv
+		switch $argv[1]
+			case '-h' '--h' '--he' '--hel' '--help'
+				help contains
+				return
+
+			case '--'
+				# End the loop, the next argument is the key
+				set -e argv[1]
+				break
+			
+			case '-*'
+				printf (_ "%s: Unknown option '%s'\n") contains $argv[$i]
+				help contains
+				return 1
+
+			case '*'
+				# End the loop, we found the key
+				break				
+
+		end
+		set -e argv[1]
+	end
+
+	if not set -q argv 
+		printf (_ "%s: Key not specified\n") contains
+		return 1
+	end
+
+	set -- key $argv[1]
+	set -e argv[1]	
+
+	#
+	# Loop through values
+	#
+
+	printf "%s\n" $argv|grep -Fx -- $key >/dev/null
+	return $status
+end
+
+