mkdir: also use the dir_strip_dot_for_creation function

src/uu/install/src/install.rs

@@ -400,7 +400,7 @@ fn directory(paths: &[String], b: &Behavior) -> UResult<()> {
                 // install -d foo/. should work and just create foo/
                 // std::fs::create_dir("foo/."); fails in pure Rust
                 // See also mkdir.rs for another occurrence of this
-                let path_to_create = dir_strip_dot_for_creation(path.to_path_buf());
+                let path_to_create = dir_strip_dot_for_creation(path);
                 // Differently than the primary functionality
                 // (MainFunction::Standard), the directory functionality should
                 // create all ancestors (or components) of a directory

src/uu/mkdir/src/mkdir.rs

@@ -12,12 +12,12 @@ extern crate uucore;
 
 use clap::{crate_version, Arg, ArgMatches, Command, OsValues};
 use std::path::{Path, PathBuf};
-use uucore::display::Quotable;
 #[cfg(not(windows))]
 use uucore::error::FromIo;
 use uucore::error::{UResult, USimpleError};
 #[cfg(not(windows))]
 use uucore::mode;
+use uucore::{display::Quotable, fs::dir_strip_dot_for_creation};
 use uucore::{format_usage, InvalidEncodingHandling};
 
 static DEFAULT_PERM: u32 = 0o755;
@@ -146,9 +146,8 @@ fn exec(dirs: OsValues, recursive: bool, mode: u32, verbose: bool) -> UResult<()
         // Special case to match GNU's behavior:
         // mkdir -p foo/. should work and just create foo/
         // std::fs::create_dir("foo/."); fails in pure Rust
-        let path = if recursive && dir.to_string_lossy().ends_with("/.") {
-            // Do a simple dance to strip the "/."
-            Path::new(dir).components().collect::<PathBuf>()
+        let path = if recursive {
+            dir_strip_dot_for_creation(&PathBuf::from(dir))
         } else {
             // Normal case
             PathBuf::from(dir)

src/uucore/src/lib/features/fs.rs

@@ -475,7 +475,7 @@ pub fn display_permissions_unix(mode: mode_t, display_file_type: bool) -> String
 // install -d foo/. should work and just create foo/
 // std::fs::create_dir("foo/."); fails in pure Rust
 // See also mkdir.rs for another occurrence of this
-pub fn dir_strip_dot_for_creation(path: PathBuf) -> PathBuf {
+pub fn dir_strip_dot_for_creation(path: &Path) -> PathBuf {
     if path.to_string_lossy().ends_with("/.") {
         // Do a simple dance to strip the "/."
         Path::new(&path).components().collect::<PathBuf>()