add vterm-copy-mode.

+When you enable `vterm-copy-mode`,the terminal buffer would behave like a normal `read-only` text buffer.
+Then you can search in the output terminal, copy text, etc.
+the default keybinding is `C-cC-t`.

2 files changed, 21 insertions, 1 deletions

diff --git a/README.md b/README.md
index 308621b..8dc78c6 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,10 @@ Open a terminal in the current window.
 ## `vterm-other-window`
 
 Open a terminal in another window.
+## `vterm-copy-mode`
+When you enable `vterm-copy-mode`,the terminal buffer would behave like a normal `read-only` text buffer.
+Then you can search in the output terminal, copy text, etc.
+the default keybinding is `C-cC-t`.
 
 # Customization
 
diff --git a/vterm.el b/vterm.el
index 1c9e8f4..da80143 100644
--- a/vterm.el
+++ b/vterm.el
@@ -232,7 +232,7 @@ If nil, never delay")
            :name "vterm"
            :buffer (current-buffer)
            :command `("/bin/sh" "-c"
-                      ,(format "stty -nl sane iutf8 erase ^? rows %d columns %d >/dev/null && exec %s"
+                      ,(format "stty -nl sane ixon iutf8 erase ^? rows %d columns %d >/dev/null && exec %s"
                                (window-body-height)
                                (window-body-width)
                                vterm-shell))
@@ -262,6 +262,7 @@ If nil, never delay")
 (define-key vterm-mode-map (kbd "C-_")                 #'vterm--self-insert)
 (define-key vterm-mode-map (kbd "C-SPC")               #'vterm--self-insert)
 (define-key vterm-mode-map (kbd "C-/")                 #'vterm-undo)
+(define-key vterm-mode-map (kbd "C-c C-t")             #'vterm-copy-mode)
 
 ;; Function keys and most of C- and M- bindings
 (mapc (lambda (key)
@@ -276,6 +277,21 @@ If nil, never delay")
                                        unless (member key vterm-keymap-exceptions)
                                        collect key))))
 
+(defvar vterm-copy-map  (make-sparse-keymap))
+(define-key vterm-copy-map (kbd "C-c C-t")             #'vterm-copy-mode)
+
+(define-minor-mode vterm-copy-mode
+  "Toggle vterm copy mode."
+  :group 'vterm
+  :lighter " VTermCopy"
+  :keymap vterm-copy-map
+  (if vterm-copy-mode
+      (progn                            ;enable vterm-copy-mode
+        (use-local-map nil)
+        (vterm-send-key "s" nil nil t))
+    (use-local-map vterm-mode-map)
+    (vterm-send-key "q" nil nil t)))
+
 (defun vterm--self-insert ()
   "Sends invoking key to libvterm."
   (interactive)