v1.15.3

FIXED:
* Properly parse into map, add *All* variants

remap/funcs.go

@@ -111,3 +111,60 @@ func MustCompilePOSIX(expr string) (r *ReMap) {
 
 	return
 }
+
+/*
+strIdxSlicer takes string s, and returns the substring marked by idxPair,
+where:
+
+	idxPair = [2]int{
+		<substring START POSITION>,
+		<substring END BOUNDARY>,
+	}
+
+That is, to get `oo` from `foobar`,
+
+	idxPair = [2]int{1, 3}
+	# NOT:
+	#idxPair = [2]int{1, 2}
+
+subStr will be empty and matched will be false if:
+
+	* idxPair[0] < 0
+	* idxPair[1] < 0
+
+It will panic with [ErrShortStr] if:
+
+	* idxPair[0] > len(s)-1
+	* idxPair[1] > len(s)
+
+It will panic with [ErrInvalidIdxPair] if:
+
+	* idxPair[0] > idxPair[1]
+
+It will properly handle single-character addresses (i.e. idxPair[0] == idxPair[1]).
+*/
+func strIdxSlicer(s string, idxPair [2]int) (subStr string, matched bool) {
+
+	if idxPair[0] < 0 || idxPair[1] < 0 {
+		return
+	}
+	matched = true
+
+	if (idxPair[0] > (len(s) - 1)) ||
+		(idxPair[1] > len(s)) {
+		panic(ErrShortStr)
+	}
+	if idxPair[0] > idxPair[1] {
+		panic(ErrInvalidIdxPair)
+	}
+
+	if idxPair[0] == idxPair[1] {
+		// single character
+		subStr = string(s[idxPair[0]])
+	} else {
+		// multiple characters
+		subStr = s[idxPair[0]:idxPair[1]]
+	}
+
+	return
+}