From 2f0c340d8923284fdcd6e1eeac9db724103c84ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20F=C3=BCrmetz?= <fuermetz@mailbox.org>
Date: Wed, 26 Jul 2017 17:03:35 +0200
Subject: Terminate process if corresponding buffer is killed

---
 vterm-module.c | 16 +++++++++++++++-
 vterm-module.h |  2 ++
 vterm.el       |  3 ++-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/vterm-module.c b/vterm-module.c
index b7a0e01..6f169c2 100644
--- a/vterm-module.c
+++ b/vterm-module.c
@@ -1,6 +1,7 @@
 #include "vterm-module.h"
 #include <fcntl.h>
 #include <pty.h>
+#include <signal.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <string.h>
@@ -348,6 +349,15 @@ static emacs_value Fvterm_update(emacs_env *env, ptrdiff_t nargs,
   return env->make_integer(env, 0);
 }
 
+static emacs_value Fvterm_kill(emacs_env *env, ptrdiff_t nargs,
+                               emacs_value args[], void *data) {
+  struct Term *term = env->get_user_ptr(env, args[0]);
+  kill(term->pid, SIGKILL);
+  int status;
+  waitpid(term->pid, &status, 0);
+  return env->intern(env, "nil");
+}
+
 int emacs_module_init(struct emacs_runtime *ert) {
   emacs_env *env = ert->get_environment(ert);
   emacs_value fun;
@@ -357,9 +367,13 @@ int emacs_module_init(struct emacs_runtime *ert) {
   bind_function(env, "vterm-new", fun);
 
   fun = env->make_function(env, 1, 5, Fvterm_update,
-                           "Process io and updates the screen.", NULL);
+                           "Process io and update the screen.", NULL);
   bind_function(env, "vterm-update", fun);
 
+  fun = env->make_function(env, 1, 1, Fvterm_kill,
+                           "Kill the the shell process.", NULL);
+  bind_function(env, "vterm-kill", fun);
+
   provide(env, "vterm-module");
 
   return 0;
diff --git a/vterm-module.h b/vterm-module.h
index 3ebefe5..2af8d47 100644
--- a/vterm-module.h
+++ b/vterm-module.h
@@ -34,4 +34,6 @@ static emacs_value Fvterm_new(emacs_env *env, ptrdiff_t nargs,
 static void process_key(struct Term *term, char *key, VTermModifier modifier);
 static emacs_value Fvterm_update(emacs_env *env, ptrdiff_t nargs,
                                  emacs_value args[], void *data);
+static emacs_value Fvterm_kill(emacs_env *env, ptrdiff_t nargs,
+                               emacs_value args[], void *data);
 int emacs_module_init(struct emacs_runtime *ert);
diff --git a/vterm.el b/vterm.el
index c28af20..8381f0b 100644
--- a/vterm.el
+++ b/vterm.el
@@ -68,6 +68,7 @@ be send to the terminal.")
 
 (defun vterm-kill-buffer-hook ()
   (when (eq major-mode 'vterm-mode)
-    (cancel-timer vterm-timer)))
+    (cancel-timer vterm-timer)
+    (vterm-kill vterm-term)))
 
 (provide 'vterm)
-- 
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