Utility code to find longest common prefix/suffix and to quote strings for various shells

tools/utils/longest-common_test.go

@@ -0,0 +1,21 @@
+// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
+
+package utils
+
+import (
+	"fmt"
+	"testing"
+)
+
+var _ = fmt.Print
+
+func TestLongestCommon(t *testing.T) {
+	p := func(expected string, items ...string) {
+		actual := Prefix(items)
+		if actual != expected {
+			t.Fatalf("Failed with %#v\nExpected: %#v\nActual:   %#v", items, expected, actual)
+		}
+	}
+	p("abc", "abc", "abcd")
+	p("", "abc", "xy")
+}