patch 8.0.1708: mkdir with 'p' flag fails on existing directory commit https://github.com/vim/vim/commit/78a16b0f2a142aae1fdc96c50ab0f25194d0e755 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 14 13:51:55 2018 +0200 patch 8.0.1708: mkdir with 'p' flag fails on existing directory Problem: Mkdir with 'p' flag fails on existing directory, which is different from the mkdir shell command. Solution: Don't fail if the directory already exists. (James McCoy, closes #2775)

--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -6138,6 +6138,8 @@ mkdir({name} [, {path} [, {prot}]])
 		Example: >
 			:call mkdir($HOME . "/tmp/foo/bar", "p", 0700)
 <		This function is not available in the |sandbox|.
+		There is no error if the directory already exists and the "p"
+		flag is passed (since patch 8.0.1708).
 		Not available on all systems.  To check use: >
 			:if exists("*mkdir")
 <