Add project-name function

[Ivan Sokolov]

I hope I am doing everything right, this is my first patch for Emacs.

>From 0aa1b0417f2fd4f8fdef24194c55304611711cfa Mon Sep 17 00:00:00 2001
From: Ivan Sokolov <ivan-p-sokolov@ya.ru>
Date: Sat, 6 Mar 2021 01:43:30 +0300
Subject: [PATCH] lisp/progmodes/project.el: Add 'project-name'

---
 lisp/progmodes/project.el | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index abe563bec0..3abae8606f 100644
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -888,6 +888,13 @@ PREDICATE, HIST, and DEFAULT have the same meaning as in
   (interactive)
   (vc-dir (project-root (project-current t))))
 
+;;;###autoload
+(defun project-name (project)
+  "Return PROJECT's name."
+  (file-name-nondirectory
+   (directory-file-name
+    (project-root project))))
+
 ;;;###autoload
 (defun project-shell ()
   "Start an inferior shell in the current project's root directory.
@@ -896,12 +903,10 @@ switch to it.  Otherwise, create a new shell buffer.
 With \\[universal-argument] prefix arg, create a new inferior shell buffer even
 if one already exists."
   (interactive)
-  (let* ((default-directory (project-root (project-current t)))
+  (let* ((project (project-current t))
+         (default-directory (project-root project))
          (default-project-shell-name
-           (concat "*" (file-name-nondirectory
-                        (directory-file-name
-                         (file-name-directory default-directory)))
-                   "-shell*"))
+           (concat "*" (project-name project) "-shell*"))
          (shell-buffer (get-buffer default-project-shell-name)))
     (if (and shell-buffer (not current-prefix-arg))
         (pop-to-buffer shell-buffer)
@@ -916,12 +921,10 @@ With \\[universal-argument] prefix arg, create a new 
Eshell buffer even
 if one already exists."
   (interactive)
   (defvar eshell-buffer-name)
-  (let* ((default-directory (project-root (project-current t)))
+  (let* ((project (project-current t))
+         (default-directory (project-root project))
          (eshell-buffer-name
-          (concat "*" (file-name-nondirectory
-                       (directory-file-name
-                        (file-name-directory default-directory)))
-                  "-eshell*"))
+          (concat "*" (project-name project) "-eshell*"))
          (eshell-buffer (get-buffer eshell-buffer-name)))
     (if (and eshell-buffer (not current-prefix-arg))
         (pop-to-buffer eshell-buffer)

base-commit: ba33089d50a4f74b88cd7fc9d862d183d096c27d
-- 
2.30.1