Fix getting remote port (#8)

* Fix getting remote port

tramp-file-name-host returns hostname without the hash-port part

* get remote port, compatible with emacs 25 and 26

* Clarify on port type check in pythonic-remote-port

Author: valignatev

pythonic.el

@@ -77,9 +77,12 @@
 
 (defun pythonic-remote-port ()
   "Get port of the connection to the remote python interpreter."
-  (let ((hostname (tramp-file-name-host (tramp-dissect-file-name (pythonic-aliased-path default-directory)))))
-    (when (s-contains-p "#" hostname)
-      (string-to-number (replace-regexp-in-string "\\`.*#" "" hostname)))))
+  (let ((port (tramp-file-name-port (tramp-dissect-file-name (pythonic-aliased-path default-directory)))))
+    ;; In Emacs 25, `tramp-file-name-port' returns number,
+    ;; in Emacs 26, it returns string. This condition makes them compatible.
+    (if (stringp port)
+        (string-to-number port)
+      port)))
 
 
 ;;; File names.