Export mutable/immutable predicates.

diff --git a/src/runtime/runtime.pkg b/src/runtime/runtime.pkg
index eb2fc87771f54dfb4cda5f58afb7653ede146c62..27bf508833716433da6a2a90ea81b40d5052ea4e 100644 (file)
--- a/src/runtime/runtime.pkg
+++ b/src/runtime/runtime.pkg
@@ -969,8 +969,10 @@ USA.
          grapheme-cluster-breaks
          grapheme-cluster-length
          grapheme-cluster-slice
+         immutable-string?
          list->string
          make-string
+         mutable-string?
          string
          string*
          string->list
@@ -1008,6 +1010,7 @@ USA.
          string-hash
          string-hash-ci
          string-head
+         string-immutable?
          string-in-nfc?
          string-in-nfd?
          string-joiner
@@ -1017,6 +1020,7 @@ USA.
          string-map
          string-match-backward
          string-match-forward
+         string-mutable?
          string-null?
          string-pad-left
          string-pad-right