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

tools/utils/shell.go

@@ -0,0 +1,26 @@
+// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
+
+package utils
+
+import (
+	"fmt"
+	"strings"
+)
+
+var _ = fmt.Print
+
+// Quotes arbitrary strings for bash, dash and zsh
+func QuoteStringForSH(x string) string {
+	parts := strings.Split(x, "'")
+	for i, p := range parts {
+		parts[i] = "'" + p + "'"
+	}
+	return strings.Join(parts, "\"'\"")
+}
+
+// Quotes arbitrary strings for fish
+func QuoteStringForFish(x string) string {
+	x = strings.ReplaceAll(x, "\\", "\\\\")
+	x = strings.ReplaceAll(x, "'", "\\'")
+	return "'" + x + "'"
+}