[Emacs-diffs] master 68e03d1: Fix Android 6/7 problems in Tramp

[Michael Albinus]

branch: master
commit 68e03d1eb40e8766b9bb51d9519188d8a21db0c3
Author: Michael Albinus <address@hidden>
Commit: Michael Albinus <address@hidden>

    Fix Android 6/7 problems in Tramp
    
    * lisp/net/tramp-adb.el (tramp-adb-ls-toolbox-regexp): Fix link part.
    (tramp-adb-handle-directory-files-and-attributes)
    (tramp-adb-handle-file-name-all-completions): Insert "."  and
    ".." only when needed.
    (tramp-adb-get-ls-command): Force one column output for toybox.
---
 lisp/net/tramp-adb.el | 49 ++++++++++++++++++++++++++++---------------------
 1 file changed, 28 insertions(+), 21 deletions(-)

diff --git a/lisp/net/tramp-adb.el b/lisp/net/tramp-adb.el
index 23aa901..3469790 100644
--- a/lisp/net/tramp-adb.el
+++ b/lisp/net/tramp-adb.el
@@ -72,7 +72,7 @@ It is used for TCP/IP devices."
 (defconst tramp-adb-ls-toolbox-regexp
   (concat
    "^[[:space:]]*\\([-[:alpha:]]+\\)"  ; \1 permissions
-   "\\(?:[[:space:]][[:digit:]]+\\)?"  ; links (Android 7/ToolBox)
+   "\\(?:[[:space:]]+[[:digit:]]+\\)?" ; links (Android 7/toybox)
    "[[:space:]]*\\([^[:space:]]+\\)"   ; \2 username
    "[[:space:]]+\\([^[:space:]]+\\)"   ; \3 group
    "[[:space:]]+\\([[:digit:]]+\\)"    ; \4 size
@@ -411,15 +411,17 @@ pass to the OPERATION."
                            (tramp-adb-get-ls-command v)
                            (tramp-shell-quote-argument localname)))
             ;; We insert also filename/. and filename/.., because "ls" doesn't.
-            (narrow-to-region (point) (point))
-            (tramp-adb-send-command
-             v (format "%s -d -a -l %s %s"
-                       (tramp-adb-get-ls-command v)
-                       (tramp-shell-quote-argument
-                        (concat (file-name-as-directory localname) "."))
-                       (tramp-shell-quote-argument
-                        (concat (file-name-as-directory localname) ".."))))
-            (widen))
+            ;; Looks like it does include them in toybox, since Android 6.
+            (unless (re-search-backward "\\.$" nil t)
+              (narrow-to-region (point-max) (point-max))
+              (tramp-adb-send-command
+               v (format "%s -d -a -l %s %s"
+                         (tramp-adb-get-ls-command v)
+                         (tramp-shell-quote-argument
+                          (concat (file-name-as-directory localname) "."))
+                         (tramp-shell-quote-argument
+                          (concat (file-name-as-directory localname) ".."))))
+              (widen)))
           (tramp-adb-sh-fix-ls-output)
           (let ((result (tramp-do-parse-file-attributes-with-ls
                          v (or id-format 'integer))))
@@ -443,11 +445,12 @@ pass to the OPERATION."
   (with-tramp-connection-property vec "ls"
     (tramp-message vec 5 "Finding a suitable `ls' command")
     (cond
-     ;; Can't disable coloring explicitly for toybox ls command
-     ((tramp-adb-send-command-and-check vec "toybox") "ls")
+     ;; Can't disable coloring explicitly for toybox ls command.  We
+     ;; must force "ls" to print just one column.
+     ((tramp-adb-send-command-and-check vec "toybox") "env COLUMNS=1 ls")
      ;; On CyanogenMod based system BusyBox is used and "ls" output
-     ;; coloring is enabled by default.  So we try to disable it
-     ;; when possible.
+     ;; coloring is enabled by default.  So we try to disable it when
+     ;; possible.
      ((tramp-adb-send-command-and-check vec "ls --color=never -al /dev/null")
       "ls --color=never")
      (t "ls"))))
@@ -569,13 +572,17 @@ Emacs dired can't find files."
                (file-name-as-directory f)
              f))
          (with-current-buffer (tramp-get-buffer v)
-           (append
-            '("." "..")
-            (delq
-             nil
-             (mapcar
-              (lambda (l) (and (not (string-match  "^[[:space:]]*$" l)) l))
-              (split-string (buffer-string) "\n")))))))))))
+           (delete-dups
+            (append
+             ;; In older Android versions, "." and ".." are not
+             ;; included.  In newer versions (toybox, since Android
+             ;; 6) they are.  We fix this by `delete-dups'.
+             '("." "..")
+             (delq
+              nil
+              (mapcar
+               (lambda (l) (and (not (string-match  "^[[:space:]]*$" l)) l))
+               (split-string (buffer-string) "\n"))))))))))))
 
 (defun tramp-adb-handle-file-local-copy (filename)
   "Like `file-local-copy' for Tramp files."