1 files changed, 10 insertions, 0 deletions
diff --git a/lib/pure/strutils.nim b/lib/pure/strutils.nim
index 8e3816904..368ef2564 100755
--- a/lib/pure/strutils.nim
+++ b/lib/pure/strutils.nim
@@ -531,6 +531,16 @@ proc endsWith*(s, suffix: string): bool {.noSideEffect,
     if s[i+j] != suffix[i]: return false
     inc(i)
   if suffix[i] == '\0': return true
+
+proc continuesWith*(s, substr: string, start: int): bool {.noSideEffect,
+  rtl, extern: "nsuContinuesWith".} =
+  ## Returns true iff ``s`` continues with ``substr`` at position ``start``.
+  ## If ``substr == ""`` true is returned.
+  var i = 0
+  while true:
+    if substr[i] == '\0': return true
+    if s[i+start] != substr[i]: return false
+    inc(i)
 
 proc addSep*(dest: var string, sep = ", ", startLen = 0) {.noSideEffect,
                                                            inline.} =