refactor(lua): rename tbl_isarray => isarray

tbl_isarray was not released yet, so it will not go through
a deprecation cycle.

ref #24572

runtime/doc/deprecated.txt

@@ -172,8 +172,8 @@ LUA
 - vim.register_keystroke_callback()	Use |vim.on_key()| instead.
 - *vim.pretty_print()*			Use |vim.print()| instead.
 - *vim.loop*				Use |vim.uv| instead.
-- *vim.tbl_islist()*                      Use |vim.islist()| instead.
 - *vim.tbl_add_reverse_lookup()*
+- *vim.tbl_islist()*			Use |vim.islist()| instead.
 
 NORMAL COMMANDS
 - *]f* *[f*		Same as "gf".

runtime/doc/lua.txt

@@ -2029,6 +2029,26 @@ vim.is_callable({f})                                       *vim.is_callable()*
     Return: ~
         (`boolean`) `true` if `f` is callable, else `false`
 
+vim.isarray({t})                                               *vim.isarray()*
+    Tests if `t` is an "array": a table indexed only by integers (potentially
+    non-contiguous).
+
+    If the indexes start from 1 and are contiguous then the array is also a
+    list. |vim.islist()|
+
+    Empty table `{}` is an array, unless it was created by |vim.empty_dict()|
+    or returned as a dict-like |API| or Vimscript result, for example from
+    |rpcrequest()| or |vim.fn|.
+
+    Parameters: ~
+      • {t}  (`table?`)
+
+    Return: ~
+        (`boolean`) `true` if array-like table, else `false`.
+
+    See also: ~
+      • https://github.com/openresty/luajit2#tableisarray
+
 vim.islist({t})                                                 *vim.islist()*
     Tests if `t` is a "list": a table indexed only by contiguous integers
     starting from 1 (what |lua-length| calls a "regular array").
@@ -2044,7 +2064,7 @@ vim.islist({t})                                                 *vim.islist()*
         (`boolean`) `true` if list-like table, else `false`.
 
     See also: ~
-      • |vim.tbl_isarray()|
+      • |vim.isarray()|
 
 vim.list_contains({t}, {value})                          *vim.list_contains()*
     Checks if a list-like table (integer keys without gaps) contains `value`.
@@ -2296,26 +2316,6 @@ vim.tbl_get({o}, {...})                                        *vim.tbl_get()*
     Return: ~
         (`any`) Nested value indexed by key (if it exists), else nil
 
-vim.tbl_isarray({t})                                       *vim.tbl_isarray()*
-    Tests if `t` is an "array": a table indexed only by integers (potentially
-    non-contiguous).
-
-    If the indexes start from 1 and are contiguous then the array is also a
-    list. |vim.islist()|
-
-    Empty table `{}` is an array, unless it was created by |vim.empty_dict()|
-    or returned as a dict-like |API| or Vimscript result, for example from
-    |rpcrequest()| or |vim.fn|.
-
-    Parameters: ~
-      • {t}  (`table`)
-
-    Return: ~
-        (`boolean`) `true` if array-like table, else `false`.
-
-    See also: ~
-      • https://github.com/openresty/luajit2#tableisarray
-
 vim.tbl_isempty({t})                                       *vim.tbl_isempty()*
     Checks if a table is empty.
 

runtime/doc/news.txt

@@ -25,7 +25,7 @@ The following changes may require adaptations in user config or plugins.
 • |vim.islist()| now checks whether a table is actually list-like (i.e.,
   has integer keys without gaps and starting from 1). For the previous
   behavior (only check for integer keys, allow gaps or not starting with 1),
-  use |vim.tbl_isarray()|.
+  use |vim.isarray()|.
 
 • "#" followed by a digit no longer stands for a function key at the start of
   the lhs of a mapping.
@@ -155,7 +155,7 @@ unreleased features on Nvim HEAD.
 
 • Removed vim.iter.map(), vim.iter.filter(), vim.iter.totable().
 
-• Renamed vim.tbl_islist() to vim.islist().
+• Renamed vim.tbl_isarray() to vim.isarray().
 
 ==============================================================================
 NEW FEATURES                                                    *news-features*
@@ -563,7 +563,7 @@ release.
   populated. Background color detection is now performed in Lua by the Nvim
   core, not the TUI.
 
-• vim.shared functions:
+• Lua stdlib:
   - |vim.tbl_add_reverse_lookup()|
   - |vim.tbl_islist()|