version 0.4.2

Running python code in signal handlers makes me nervous

CHANGELOG.rst

@@ -4,11 +4,13 @@ Changelog
 kitty is a feature full, cross-platform, *fast*, OpenGL based terminal emulator.
 
 
-version 0.4.1 [2017-10-23]
+version 0.4.2 [2017-10-23]
 ---------------------------
 
 - Fix a regression in 0.4.0 that broke custom key mappings
 
+- Fix a regression in 0.4.0 that broke support for non-QWERTY keyboard layouts 
+
 - Avoid using threads to reap zombie child processes. Also prevent kitty from
   hanging if the open program hangs when clicking on a URL.
 

kitty/constants.py

@@ -11,7 +11,7 @@ from collections import namedtuple
 from .fast_data_types import set_boss as set_c_boss
 
 appname = 'kitty'
-version = (0, 4, 1)
+version = (0, 4, 2)
 str_version = '.'.join(map(str, version))
 _plat = sys.platform.lower()
 isosx = 'darwin' in _plat

kitty/data-types.c

@@ -9,6 +9,8 @@
 #include "modes.h"
 #include <stddef.h>
 #include <termios.h>
+#include <signal.h>
+#include <sys/wait.h>
 #ifdef WITH_PROFILER
 #include <gperftools/profiler.h>
 #endif
@@ -81,6 +83,28 @@ pyset_iutf8(PyObject UNUSED *self, PyObject *args) {
     Py_RETURN_NONE;
 }
 
+static void
+handle_sigchld(int UNUSED signum, siginfo_t *sinfo, void UNUSED *unused) {
+    if (sinfo->si_code != CLD_EXITED) return;
+    int sav_errno = errno, status;
+    while(true) {
+        if (waitpid(sinfo->si_pid, &status, WNOHANG) == -1) {
+            if (errno != EINTR) break;
+        } else break;
+    }
+    errno = sav_errno;
+}
+
+static PyObject*
+install_sigchld_handler(PyObject UNUSED *self) {
+    struct sigaction sa;
+    sa.sa_flags = SA_SIGINFO;
+    sa.sa_sigaction = handle_sigchld;
+    sigemptyset(&sa.sa_mask);
+    if (sigaction(SIGCHLD, &sa, NULL) == -1) return PyErr_SetFromErrno(PyExc_OSError);
+    Py_RETURN_NONE;
+}
+
 #ifdef WITH_PROFILER
 static PyObject*
 start_profiler(PyObject UNUSED *self, PyObject *args) {
@@ -105,6 +129,7 @@ static PyMethodDef module_methods[] = {
     {"redirect_std_streams", (PyCFunction)redirect_std_streams, METH_VARARGS, ""},
     {"wcwidth", (PyCFunction)wcwidth_wrap, METH_O, ""},
     {"change_wcwidth", (PyCFunction)change_wcwidth_wrap, METH_O, ""},
+    {"install_sigchld_handler", (PyCFunction)install_sigchld_handler, METH_NOARGS, ""},
 #ifdef WITH_PROFILER
     {"start_profiler", (PyCFunction)start_profiler, METH_VARARGS, ""},
     {"stop_profiler", (PyCFunction)stop_profiler, METH_NOARGS, ""},

kitty/keys.c

@@ -89,31 +89,32 @@ get_localized_key(int key, int scancode) {
     switch(name[0]) {
 #define K(ch, name) case ch: return GLFW_KEY_##name
         // key names {{{
-        K('A', A);
+        K('A', A); K('a', A);
-        K('B', B);
+        K('B', B); K('b', B);
-        K('C', C);
+        K('C', C); K('c', C); 
-        K('D', D);
+        K('D', D); K('d', D);
-        K('E', E);
+        K('E', E); K('e', E);
-        K('F', F);
+        K('F', F); K('f', F);
-        K('G', G);
+        K('G', G); K('g', G);
-        K('H', H);
+        K('H', H); K('h', H);
-        K('I', I);
+        K('I', I); K('i', I);
-        K('J', J);
+        K('J', J); K('j', J);
-        K('K', K);
+        K('K', K); K('k', K);
-        K('L', L);
+        K('L', L); K('l', L);
-        K('M', M);
+        K('M', M); K('m', M);
-        K('N', N);
+        K('N', N); K('n', N);
-        K('O', O);
+        K('O', O); K('o', O);
-        K('P', P);
+        K('P', P); K('p', P);
-        K('Q', Q);
+        K('Q', Q); K('q', Q);
-        K('S', S);
+        K('R', R); K('r', R);
-        K('T', T);
+        K('S', S); K('s', S);
-        K('U', U);
+        K('T', T); K('t', T);
-        K('V', V);
+        K('U', U); K('u', U);
-        K('W', W);
+        K('V', V); K('v', V);
-        K('X', X);
+        K('W', W); K('w', W);
-        K('Y', Y);
+        K('X', X); K('x', X);
-        K('Z', Z);
+        K('Y', Y); K('y', Y);
+        K('Z', Z); K('z', Z);
         K('0', 0);
         K('1', 1);
         K('2', 2);

kitty/main.py

@@ -3,7 +3,6 @@
 # License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 import argparse
-import errno
 import locale
 import os
 import signal
@@ -25,8 +24,8 @@ from .fast_data_types import (
     GLFW_OPENGL_FORWARD_COMPAT, GLFW_OPENGL_PROFILE, GLFW_SAMPLES,
     GLFW_STENCIL_BITS, GLFWWindow, change_wcwidth, check_for_extensions,
     clear_buffers, glewInit, glfw_init, glfw_init_hint_string,
-    glfw_swap_interval, glfw_terminate, glfw_window_hint, set_logical_dpi,
+    glfw_swap_interval, glfw_terminate, glfw_window_hint,
-    set_options
+    install_sigchld_handler, set_logical_dpi, set_options
 )
 from .layout import all_layouts
 from .utils import color_as_int, detach, get_logical_dpi, safe_print
@@ -245,19 +244,6 @@ def setup_profiling(args):
             print('To view the graphical call data, use: kcachegrind', cg)
 
 
-def reap_zombies(*a):
-    while True:
-        try:
-            pid, status = os.waitpid(-1, os.WNOHANG)
-            if pid == 0:
-                break
-        except OSError as err:
-            if err.errno != errno.EINTR:
-                break
-        except Exception:
-            break
-
-
 def main():
     try:
         sys.setswitchinterval(1000.0)  # we have only a single python thread
@@ -302,7 +288,7 @@ def main():
     try:
         with setup_profiling(args):
             # Avoid needing to launch threads to reap zombies
-            signal.signal(signal.SIGCHLD, reap_zombies)
+            install_sigchld_handler()
             run_app(opts, args)
             signal.signal(signal.SIGCHLD, signal.SIG_DFL)
     finally: