diff --git a/m-rbtree.h b/m-rbtree.h
index c5da63c7..0be4bd58 100644
--- a/m-rbtree.h
+++ b/m-rbtree.h
@@ -76,6 +76,7 @@
    GET_MIN(M_C(name,_min)),						\
    GET_MAX(M_C(name,_max)),						\
    M_IF_METHOD(GET_STR, oplist)(GET_STR(M_C(name, _get_str)),),		\
+   M_IF_METHOD(PARSE_STR, oplist)(PARSE_STR(M_C(name, _parse_str)),),   \
    M_IF_METHOD(OUT_STR, oplist)(OUT_STR(M_C(name, _out_str)),),		\
    M_IF_METHOD(IN_STR, oplist)(IN_STR(M_C(name, _in_str)),),		\
    M_IF_METHOD(EQUAL, oplist)(EQUAL(M_C(name, _equal_p)),),		\
@@ -944,6 +945,36 @@ typedef enum {
   }                                                                     \
   , /* no out_str */ )                                                  \
                                                                         \
+  M_IF_METHOD(PARSE_STR, oplist)(                                       \
+  static inline bool                                                    \
+  M_C(name, _parse_str)(tree_t rbtree, const char str[], const char **endp) \
+  {                                                                     \
+    RBTREEI_CONTRACT(rbtree);                                           \
+    assert (str != NULL);                                               \
+    M_C(name,_clean)(rbtree);						\
+    bool success = false;                                               \
+    int c = *str++;                                                     \
+    if (M_UNLIKELY (c != '[')) goto exit;                               \
+    c = *str++;                                                         \
+    if (M_UNLIKELY (c == ']')) { success = true; goto exit; }           \
+    if (M_UNLIKELY (c == 0)) goto exit;                                 \
+    str--;                                                              \
+    type item;                                                          \
+    M_GET_INIT oplist (item);                                           \
+    do {                                                                \
+      bool b = M_GET_PARSE_STR oplist (item, str, &str);                \
+      do { c = *str++; } while (isspace(c));                            \
+      if (b == false || c == 0) goto exit;                              \
+      M_C(name, _push)(rbtree, item);					\
+    } while (c == M_GET_SEPARATOR oplist);				\
+    M_GET_CLEAR oplist (item);                                          \
+    success = (c == ']');                                               \
+  exit:                                                                 \
+    if (endp) *endp = str;                                              \
+    return success;                                                     \
+  }                                                                     \
+  , /* no parse_str */ )                                                \
+                                                                        \
   M_IF_METHOD(IN_STR, oplist)(                                          \
   static inline bool                                                    \
   M_C(name, _in_str)(tree_t rbtree, FILE *file)                         \
@@ -961,7 +992,7 @@ typedef enum {
     M_GET_INIT oplist (item);                                           \
     do {                                                                \
       bool b = M_GET_IN_STR oplist (item, file);                        \
-      c = fgetc(file);                                                  \
+      do { c = fgetc(file); } while (isspace(c));                       \
       if (b == false || c == EOF) break;				\
       M_C(name, _push)(rbtree, item);					\
     } while (c == M_GET_SEPARATOR oplist);				\
diff --git a/tests/mympz.h b/tests/mympz.h
index feecf728..13ca0d64 100644
--- a/tests/mympz.h
+++ b/tests/mympz.h
@@ -78,7 +78,7 @@ static bool my_mpz_parse_str(my_mpz_t z, const char str[], const char **endptr)
   z->n = 1;
   char *end;
   z->ptr[0] = strtol(str, &end, 0);
-  *endptr = (const char*) end;
+  if (endptr) { *endptr = (const char*) end; }
   return (uintptr_t) end != (uintptr_t) str;
 }
 
diff --git a/tests/test-mrbtree.c b/tests/test-mrbtree.c
index 84b00364..123f3a5e 100644
--- a/tests/test-mrbtree.c
+++ b/tests/test-mrbtree.c
@@ -31,10 +31,19 @@ static bool uint_in_str(unsigned int *u, FILE *f)
   return n == 1;
 }
 
+static bool uint_parse_str(unsigned int *u, const char str[], const char **endptr)
+{
+  char *end;
+  *u = strtol(str, &end, 0);
+  if (endptr) { *endptr = (const char*) end; }
+  return (uintptr_t) end != (uintptr_t) str;
+}
+
 static void uint_out_str(FILE *f, unsigned int u)
 {
   fprintf(f, "%u", u);
 }
+
 static void uint_get_str(string_t str, unsigned int u, bool append)
 {
   (append ? string_cat_printf : string_printf) (str, "%u", u);
@@ -42,7 +51,7 @@ static void uint_get_str(string_t str, unsigned int u, bool append)
 
 #include "coverage.h"
 START_COVERAGE
-RBTREE_DEF(rbtree_uint, unsigned int, M_OPEXTEND(M_DEFAULT_OPLIST, IN_STR(uint_in_str M_IPTR), OUT_STR(uint_out_str), GET_STR(uint_get_str)) )
+RBTREE_DEF(rbtree_uint, unsigned int, M_OPEXTEND(M_DEFAULT_OPLIST, IN_STR(uint_in_str M_IPTR), OUT_STR(uint_out_str), GET_STR(uint_get_str), PARSE_STR(uint_parse_str M_IPTR)) )
 END_COVERAGE
 
 RBTREE_DEF(rbtree_float, float)
@@ -219,6 +228,11 @@ static void test_io(void)
 
     rbtree_uint_get_str(str, tree1, false);
     assert(string_equal_str_p(str, "[]"));
+    const char *sp;
+    b = rbtree_uint_parse_str(tree2, string_get_cstr(str), &sp);
+    assert(b);
+    assert(*sp == 0);
+    assert(rbtree_uint_equal_p(tree1, tree2));
 
     // Fill in data
     for(unsigned int i = 0 ; i < 10; i++)
@@ -238,6 +252,10 @@ static void test_io(void)
 
     rbtree_uint_get_str(str, tree1, false);
     assert(string_equal_str_p(str, "[0,1,2,3,4,5,6,7,8,9]"));
+    b = rbtree_uint_parse_str(tree2, string_get_cstr(str), &sp);
+    assert(b);
+    assert(*sp == 0);
+    assert(rbtree_uint_equal_p(tree1, tree2));
   }
   
 }