patch 9.1.1025: wrong return type of blob2str()

Problem:  wrong return type of blob2str()
Solution: update return to list of string
          (Yegappan Lakshmanan)

closes: #16461

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/doc/builtin.txt

@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.1.  Last change: 2025 Jan 16
+*builtin.txt*	For Vim version 9.1.  Last change: 2025 Jan 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -72,7 +72,7 @@ base64_encode({blob})		String	base64 encode the bytes in {blob}
 bindtextdomain({package}, {path})
 				Bool	bind text domain to specified path
 blob2list({blob})		List	convert {blob} into a list of numbers
-blob2str({blob} [, {options}])	String	convert {blob} into a list of strings
+blob2str({blob} [, {options}])	List	convert {blob} into a list of strings
 browse({save}, {title}, {initdir}, {default})
 				String	put up a file requester
 browsedir({title}, {initdir})	String	put up a directory requester

src/evalfunc.c

@@ -1847,7 +1847,7 @@ static funcentry_T global_functions[] =
     {"blob2list",	1, 1, FEARG_1,	    arg1_blob,
 			ret_list_number,    f_blob2list},
     {"blob2str",	1, 2, FEARG_1,	    arg2_blob_dict,
-			ret_string,	    f_blob2str},
+			ret_list_string,    f_blob2str},
     {"browse",		4, 4, 0,	    arg4_browse,
 			ret_string,	    f_browse},
     {"browsedir",	2, 2, 0,	    arg2_string,

src/testdir/test_vim9_builtin.vim

@@ -357,6 +357,16 @@ def Test_blob2list()
   v9.CheckSourceDefAndScriptFailure(['blob2list(10)'], ['E1013: Argument 1: type mismatch, expected blob but got number', 'E1238: Blob required for argument 1'])
 enddef
 
+def Test_blob2str()
+  0z6162->blob2str()->assert_equal(["ab"])
+  blob2str(0z)->assert_equal([])
+
+  var l: list<string> = blob2str(0zC2ABC2BB)
+  assert_equal(["«»"], l)
+
+  v9.CheckSourceDefAndScriptFailure(['blob2str("ab")'], ['E1013: Argument 1: type mismatch, expected blob but got string', 'E1238: Blob required for argument 1'])
+enddef
+
 def Test_browse()
   CheckFeature browse
 
@@ -4325,6 +4335,13 @@ def Test_state()
   assert_equal('', state('a'))
 enddef
 
+def Test_str2blob()
+  ["ab"]->str2blob()->assert_equal(0z6162)
+  str2blob([""])->assert_equal(0z)
+
+  v9.CheckSourceDefAndScriptFailure(['str2blob("ab")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1211: List required for argument 1'])
+enddef
+
 def Test_str2float()
   str2float("1.00")->assert_equal(1.00)
   str2float("2e-2")->assert_equal(0.02)

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1025,
 /**/
     1024,
 /**/