1 files changed, 13 insertions, 1 deletions
diff --git a/lib/system.nim b/lib/system.nim
index c0e95a5d2..c28479a44 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -2580,7 +2580,19 @@ template once*(body: untyped): untyped =
 
 {.pop.} # warning[GcMem]: off, warning[Uninit]: off
 
-proc substr*(s: string, first, last: int): string =
+proc substr*(s: openArray[char]): string =
+  ## Copies a slice of `s` into a new string and returns this new
+  ## string.
+  runnableExamples:
+    let a = "abcdefgh"
+    assert a.substr(2, 5) == "cdef"
+    assert a.substr(2) == "cdefgh"
+    assert a.substr(5, 99) == "fgh"
+  result = newString(s.len)
+  for i, ch in s:
+    result[i] = ch
+
+proc substr*(s: string, first, last: int): string = # A bug with `magic: Slice` requires this to exist this way
   ## Copies a slice of `s` into a new string and returns this new
   ## string.
   ##