Make `C-{up,down,left,right}' work in term mode

* lisp/term.el (term-raw-map): Define C-{up,down,left,right}
to send the same escape sequence that xterm sends.  This makes
backward-word and forward-word work in readline (bug#16746).

2 files changed, 12 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index cf121d0eec3..ce84b48e9ab 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1543,6 +1543,10 @@ symbol-function was changed not to signal `void-function' any more.
 ** Comint, term, and compile do not set the EMACS env var any more.
 Use the INSIDE_EMACS environment variable instead.
 
+** `C-up', `C-down', `C-left' and `C-right' are now defined in term
+mode to send the same escape sequences that xterm does.  This makes
+things like forward-word in readline work.
+
 +++
 ** `save-excursion' does not save&restore the mark any more.
 Use `save-mark-and-excursion' if you want the old behavior.
diff --git a/lisp/term.el b/lisp/term.el
index a2e01ed4a29..c1e827875d1 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -834,6 +834,10 @@ is buffer-local."
     (define-key map [down] 'term-send-down)
     (define-key map [right] 'term-send-right)
     (define-key map [left] 'term-send-left)
+    (define-key map [C-up] 'term-send-ctrl-up)
+    (define-key map [C-down] 'term-send-ctrl-down)
+    (define-key map [C-right] 'term-send-ctrl-right)
+    (define-key map [C-left] 'term-send-ctrl-left)
     (define-key map [delete] 'term-send-del)
     (define-key map [deletechar] 'term-send-del)
     (define-key map [backspace] 'term-send-backspace)
@@ -1217,6 +1221,10 @@ without any interpretation."
 (defun term-send-down  () (interactive) (term-send-raw-string "\eOB"))
 (defun term-send-right () (interactive) (term-send-raw-string "\eOC"))
 (defun term-send-left  () (interactive) (term-send-raw-string "\eOD"))
+(defun term-send-ctrl-up    () (interactive) (term-send-raw-string "\e[1;5A"))
+(defun term-send-ctrl-down  () (interactive) (term-send-raw-string "\e[1;5B"))
+(defun term-send-ctrl-right () (interactive) (term-send-raw-string "\e[1;5C"))
+(defun term-send-ctrl-left  () (interactive) (term-send-raw-string "\e[1;5D"))
 (defun term-send-home  () (interactive) (term-send-raw-string "\e[1~"))
 (defun term-send-insert() (interactive) (term-send-raw-string "\e[2~"))
 (defun term-send-end   () (interactive) (term-send-raw-string "\e[4~"))