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awesome/ewmh.c

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/*
* ewmh.c - EWMH support functions
*
* Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "ewmh.h"
#include "objects/client.h"
#include "objects/tag.h"
#include "common/atoms.h"
#include <sys/types.h>
#include <unistd.h>
#include <xcb/xcb.h>
#include <xcb/xcb_atom.h>
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
/** Update client EWMH hints.
* \param L The Lua VM state.
*/
static int
ewmh_client_update_hints(lua_State *L)
{
client_t *c = luaA_checkudata(L, 1, &client_class);
xcb_atom_t state[10]; /* number of defined state atoms */
int i = 0;
if(c->modal)
state[i++] = _NET_WM_STATE_MODAL;
if(c->fullscreen)
state[i++] = _NET_WM_STATE_FULLSCREEN;
if(c->maximized_vertical)
state[i++] = _NET_WM_STATE_MAXIMIZED_VERT;
if(c->maximized_horizontal)
state[i++] = _NET_WM_STATE_MAXIMIZED_HORZ;
if(c->sticky)
state[i++] = _NET_WM_STATE_STICKY;
if(c->skip_taskbar)
state[i++] = _NET_WM_STATE_SKIP_TASKBAR;
if(c->above)
state[i++] = _NET_WM_STATE_ABOVE;
if(c->below)
state[i++] = _NET_WM_STATE_BELOW;
if(c->minimized)
state[i++] = _NET_WM_STATE_HIDDEN;
if(c->urgent)
state[i++] = _NET_WM_STATE_DEMANDS_ATTENTION;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
c->window, _NET_WM_STATE, XCB_ATOM_ATOM, 32, i, state);
return 0;
}
static int
ewmh_update_net_active_window(lua_State *L)
{
xcb_window_t win;
if(globalconf.focus.client)
win = globalconf.focus.client->window;
else
win = XCB_NONE;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &win);
return 0;
}
static int
ewmh_update_net_client_list(lua_State *L)
{
xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.clients.len);
int n = 0;
foreach(client, globalconf.clients)
wins[n++] = (*client)->window;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_CLIENT_LIST, XCB_ATOM_WINDOW, 32, n, wins);
return 0;
}
void
ewmh_init(void)
{
lua_State *L = globalconf_get_lua_State();
xcb_window_t father;
xcb_screen_t *xscreen = globalconf.screen;
xcb_atom_t atom[] =
{
_NET_SUPPORTED,
_NET_SUPPORTING_WM_CHECK,
_NET_STARTUP_ID,
_NET_CLIENT_LIST,
_NET_CLIENT_LIST_STACKING,
_NET_NUMBER_OF_DESKTOPS,
_NET_CURRENT_DESKTOP,
_NET_DESKTOP_NAMES,
_NET_ACTIVE_WINDOW,
_NET_CLOSE_WINDOW,
_NET_WM_NAME,
_NET_WM_STRUT_PARTIAL,
_NET_WM_ICON_NAME,
_NET_WM_VISIBLE_ICON_NAME,
_NET_WM_DESKTOP,
_NET_WM_WINDOW_TYPE,
_NET_WM_WINDOW_TYPE_DESKTOP,
_NET_WM_WINDOW_TYPE_DOCK,
_NET_WM_WINDOW_TYPE_TOOLBAR,
_NET_WM_WINDOW_TYPE_MENU,
_NET_WM_WINDOW_TYPE_UTILITY,
_NET_WM_WINDOW_TYPE_SPLASH,
_NET_WM_WINDOW_TYPE_DIALOG,
_NET_WM_WINDOW_TYPE_DROPDOWN_MENU,
_NET_WM_WINDOW_TYPE_POPUP_MENU,
_NET_WM_WINDOW_TYPE_TOOLTIP,
_NET_WM_WINDOW_TYPE_NOTIFICATION,
_NET_WM_WINDOW_TYPE_COMBO,
_NET_WM_WINDOW_TYPE_DND,
_NET_WM_WINDOW_TYPE_NORMAL,
_NET_WM_ICON,
_NET_WM_PID,
_NET_WM_STATE,
_NET_WM_STATE_STICKY,
_NET_WM_STATE_SKIP_TASKBAR,
_NET_WM_STATE_FULLSCREEN,
_NET_WM_STATE_MAXIMIZED_HORZ,
_NET_WM_STATE_MAXIMIZED_VERT,
_NET_WM_STATE_ABOVE,
_NET_WM_STATE_BELOW,
_NET_WM_STATE_MODAL,
_NET_WM_STATE_HIDDEN,
_NET_WM_STATE_DEMANDS_ATTENTION
};
int i;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xscreen->root, _NET_SUPPORTED, XCB_ATOM_ATOM, 32,
countof(atom), atom);
/* create our own window */
father = xcb_generate_id(globalconf.connection);
xcb_create_window(globalconf.connection, xscreen->root_depth,
father, xscreen->root, -1, -1, 1, 1, 0,
XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
xscreen->root, _NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 32,
1, &father);
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_SUPPORTING_WM_CHECK, XCB_ATOM_WINDOW, 32,
1, &father);
/* set the window manager name */
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_WM_NAME, UTF8_STRING, 8, 7, "awesome");
/* set the window manager PID */
i = getpid();
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
father, _NET_WM_PID, XCB_ATOM_CARDINAL, 32, 1, &i);
luaA_class_connect_signal(L, &client_class, "focus", ewmh_update_net_active_window);
luaA_class_connect_signal(L, &client_class, "unfocus", ewmh_update_net_active_window);
luaA_class_connect_signal(L, &client_class, "manage", ewmh_update_net_client_list);
luaA_class_connect_signal(L, &client_class, "unmanage", ewmh_update_net_client_list);
luaA_class_connect_signal(L, &client_class, "property::modal" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::fullscreen" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::maximized_horizontal" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::maximized_vertical" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::sticky" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::skip_taskbar" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::above" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::below" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::minimized" , ewmh_client_update_hints);
luaA_class_connect_signal(L, &client_class, "property::urgent" , ewmh_client_update_hints);
}
/** Set the client list in stacking order, bottom to top.
*/
void
ewmh_update_net_client_list_stacking(void)
{
int n = 0;
xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.stack.len);
foreach(client, globalconf.stack)
wins[n++] = (*client)->window;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_CLIENT_LIST_STACKING, XCB_ATOM_WINDOW, 32, n, wins);
}
void
ewmh_update_net_numbers_of_desktop(void)
{
uint32_t count = globalconf.tags.len;
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_NUMBER_OF_DESKTOPS, XCB_ATOM_CARDINAL, 32, 1, &count);
}
void
ewmh_update_net_current_desktop(void)
{
uint32_t idx = tags_get_first_selected_index();
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_CURRENT_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &idx);
}
void
ewmh_update_net_desktop_names(void)
{
buffer_t buf;
buffer_inita(&buf, BUFSIZ);
foreach(tag, globalconf.tags)
{
buffer_adds(&buf, tag_get_name(*tag));
buffer_addc(&buf, '\0');
}
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
globalconf.screen->root,
_NET_DESKTOP_NAMES, UTF8_STRING, 8, buf.len, buf.s);
buffer_wipe(&buf);
}
static void
ewmh_process_state_atom(client_t *c, xcb_atom_t state, int set)
{
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
if(state == _NET_WM_STATE_STICKY)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_sticky(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_sticky(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_sticky(L, -1, !c->sticky);
}
else if(state == _NET_WM_STATE_SKIP_TASKBAR)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_skip_taskbar(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_skip_taskbar(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_skip_taskbar(L, -1, !c->skip_taskbar);
}
else if(state == _NET_WM_STATE_FULLSCREEN)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_fullscreen(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_fullscreen(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_fullscreen(L, -1, !c->fullscreen);
}
else if(state == _NET_WM_STATE_MAXIMIZED_HORZ)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_maximized_horizontal(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_maximized_horizontal(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_maximized_horizontal(L, -1, !c->maximized_horizontal);
}
else if(state == _NET_WM_STATE_MAXIMIZED_VERT)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_maximized_vertical(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_maximized_vertical(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_maximized_vertical(L, -1, !c->maximized_vertical);
}
else if(state == _NET_WM_STATE_ABOVE)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_above(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_above(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_above(L, -1, !c->above);
}
else if(state == _NET_WM_STATE_BELOW)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_below(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_below(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_below(L, -1, !c->below);
}
else if(state == _NET_WM_STATE_MODAL)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_modal(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_modal(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_modal(L, -1, !c->modal);
}
else if(state == _NET_WM_STATE_HIDDEN)
{
if(set == _NET_WM_STATE_REMOVE)
client_set_minimized(L, -1, false);
else if(set == _NET_WM_STATE_ADD)
client_set_minimized(L, -1, true);
else if(set == _NET_WM_STATE_TOGGLE)
client_set_minimized(L, -1, !c->minimized);
}
else if(state == _NET_WM_STATE_DEMANDS_ATTENTION)
{
if(set == _NET_WM_STATE_REMOVE) {
lua_pushboolean(L, false);
luaA_object_emit_signal(L, -2, "request::urgent", 1);
}
else if(set == _NET_WM_STATE_ADD) {
lua_pushboolean(L, true);
luaA_object_emit_signal(L, -2, "request::urgent", 1);
}
else if(set == _NET_WM_STATE_TOGGLE) {
lua_pushboolean(L, !c->urgent);
luaA_object_emit_signal(L, -2, "request::urgent", 1);
}
}
lua_pop(L, 1);
}
static void
ewmh_process_desktop(client_t *c, uint32_t desktop)
{
lua_State *L = globalconf_get_lua_State();
int idx = desktop;
if(desktop == 0xffffffff)
{
luaA_object_push(L, c);
lua_pushnil(L);
luaA_object_emit_signal(L, -2, "request::tag", 1);
/* Pop the client, arguments are already popped */
lua_pop(L, 1);
}
else if (idx >= 0 && idx < globalconf.tags.len)
{
luaA_object_push(L, c);
luaA_object_push(L, globalconf.tags.tab[idx]);
luaA_object_emit_signal(L, -2, "request::tag", 1);
/* Pop the client, arguments are already popped */
lua_pop(L, 1);
}
}
int
ewmh_process_client_message(xcb_client_message_event_t *ev)
{
client_t *c;
if(ev->type == _NET_CURRENT_DESKTOP)
{
int idx = ev->data.data32[0];
if (idx >= 0 && idx < globalconf.tags.len)
{
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, globalconf.tags.tab[idx]);
luaA_object_emit_signal(L, -1, "request::select", 0);
lua_pop(L, 1);
}
}
else if(ev->type == _NET_CLOSE_WINDOW)
{
if((c = client_getbywin(ev->window)))
client_kill(c);
}
else if(ev->type == _NET_WM_DESKTOP)
{
if((c = client_getbywin(ev->window)))
{
ewmh_process_desktop(c, ev->data.data32[0]);
}
}
else if(ev->type == _NET_WM_STATE)
{
if((c = client_getbywin(ev->window)))
{
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[1], ev->data.data32[0]);
if(ev->data.data32[2])
ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[2],
ev->data.data32[0]);
}
}
else if(ev->type == _NET_ACTIVE_WINDOW)
{
if((c = client_getbywin(ev->window))) {
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
lua_pushstring(L, "ewmh");
/* Create table argument with raise=true. */
lua_newtable(L);
lua_pushstring(L, "raise");
lua_pushboolean(L, true);
lua_settable(L, -3);
luaA_object_emit_signal(L, -3, "request::activate", 2);
lua_pop(L, 1);
}
}
return 0;
}
/** Update the client active desktop.
* This is "wrong" since it can be on several tags, but EWMH has a strict view
* of desktop system so just take the first tag.
* \param c The client.
*/
void
ewmh_client_update_desktop(client_t *c)
{
int i;
for(i = 0; i < globalconf.tags.len; i++)
if(is_client_tagged(c, globalconf.tags.tab[i]))
{
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
c->window, _NET_WM_DESKTOP, XCB_ATOM_CARDINAL, 32, 1, &i);
return;
}
/* It doesn't have any tags, remove the property */
xcb_delete_property(globalconf.connection, c->window, _NET_WM_DESKTOP);
}
/** Update the client struts.
* \param window The window to update the struts for.
* \param strut The strut type to update the window with.
*/
void
ewmh_update_strut(xcb_window_t window, strut_t *strut)
{
if(window)
{
const uint32_t state[] =
{
strut->left,
strut->right,
strut->top,
strut->bottom,
strut->left_start_y,
strut->left_end_y,
strut->right_start_y,
strut->right_end_y,
strut->top_start_x,
strut->top_end_x,
strut->bottom_start_x,
strut->bottom_end_x
};
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
window, _NET_WM_STRUT_PARTIAL, XCB_ATOM_CARDINAL, 32, countof(state), state);
}
}
/** Update the window type.
* \param window The window to update.
* \param type The new type to set.
*/
void
ewmh_update_window_type(xcb_window_t window, uint32_t type)
{
xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
window, _NET_WM_WINDOW_TYPE, XCB_ATOM_ATOM, 32, 1, &type);
}
void
ewmh_client_check_hints(client_t *c)
{
xcb_atom_t *state;
void *data = NULL;
xcb_get_property_cookie_t c0, c1, c2;
xcb_get_property_reply_t *reply;
/* Send the GetProperty requests which will be processed later */
c0 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_DESKTOP, XCB_GET_PROPERTY_TYPE_ANY, 0, 1);
c1 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_STATE, XCB_ATOM_ATOM, 0, UINT32_MAX);
c2 = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_WINDOW_TYPE, XCB_ATOM_ATOM, 0, UINT32_MAX);
reply = xcb_get_property_reply(globalconf.connection, c0, NULL);
if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
{
ewmh_process_desktop(c, *(uint32_t *) data);
}
p_delete(&reply);
reply = xcb_get_property_reply(globalconf.connection, c1, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(int i = 0; i < xcb_get_property_value_length(reply) / ssizeof(xcb_atom_t); i++)
ewmh_process_state_atom(c, state[i], _NET_WM_STATE_ADD);
}
p_delete(&reply);
reply = xcb_get_property_reply(globalconf.connection, c2, NULL);
if(reply && (data = xcb_get_property_value(reply)))
{
state = (xcb_atom_t *) data;
for(int i = 0; i < xcb_get_property_value_length(reply) / ssizeof(xcb_atom_t); i++)
if(state[i] == _NET_WM_WINDOW_TYPE_DESKTOP)
c->type = MAX(c->type, WINDOW_TYPE_DESKTOP);
else if(state[i] == _NET_WM_WINDOW_TYPE_DIALOG)
c->type = MAX(c->type, WINDOW_TYPE_DIALOG);
else if(state[i] == _NET_WM_WINDOW_TYPE_SPLASH)
c->type = MAX(c->type, WINDOW_TYPE_SPLASH);
else if(state[i] == _NET_WM_WINDOW_TYPE_DOCK)
c->type = MAX(c->type, WINDOW_TYPE_DOCK);
else if(state[i] == _NET_WM_WINDOW_TYPE_MENU)
c->type = MAX(c->type, WINDOW_TYPE_MENU);
else if(state[i] == _NET_WM_WINDOW_TYPE_TOOLBAR)
c->type = MAX(c->type, WINDOW_TYPE_TOOLBAR);
else if(state[i] == _NET_WM_WINDOW_TYPE_UTILITY)
c->type = MAX(c->type, WINDOW_TYPE_UTILITY);
}
p_delete(&reply);
}
/** Process the WM strut of a client.
* \param c The client.
*/
void
ewmh_process_client_strut(client_t *c)
{
void *data;
xcb_get_property_reply_t *strut_r;
xcb_get_property_cookie_t strut_q = xcb_get_property_unchecked(globalconf.connection, false, c->window,
_NET_WM_STRUT_PARTIAL, XCB_ATOM_CARDINAL, 0, 12);
strut_r = xcb_get_property_reply(globalconf.connection, strut_q, NULL);
if(strut_r
&& strut_r->value_len
&& (data = xcb_get_property_value(strut_r)))
{
uint32_t *strut = data;
if(c->strut.left != strut[0]
|| c->strut.right != strut[1]
|| c->strut.top != strut[2]
|| c->strut.bottom != strut[3]
|| c->strut.left_start_y != strut[4]
|| c->strut.left_end_y != strut[5]
|| c->strut.right_start_y != strut[6]
|| c->strut.right_end_y != strut[7]
|| c->strut.top_start_x != strut[8]
|| c->strut.top_end_x != strut[9]
|| c->strut.bottom_start_x != strut[10]
|| c->strut.bottom_end_x != strut[11])
{
c->strut.left = strut[0];
c->strut.right = strut[1];
c->strut.top = strut[2];
c->strut.bottom = strut[3];
c->strut.left_start_y = strut[4];
c->strut.left_end_y = strut[5];
c->strut.right_start_y = strut[6];
c->strut.right_end_y = strut[7];
c->strut.top_start_x = strut[8];
c->strut.top_end_x = strut[9];
c->strut.bottom_start_x = strut[10];
c->strut.bottom_end_x = strut[11];
lua_State *L = globalconf_get_lua_State();
luaA_object_push(L, c);
luaA_object_emit_signal(L, -1, "property::struts", 0);
lua_pop(L, 1);
}
}
p_delete(&strut_r);
}
/** Send request to get NET_WM_ICON (EWMH)
* \param w The window.
* \return The cookie associated with the request.
*/
xcb_get_property_cookie_t
ewmh_window_icon_get_unchecked(xcb_window_t w)
{
return xcb_get_property_unchecked(globalconf.connection, false, w,
_NET_WM_ICON, XCB_ATOM_CARDINAL, 0, UINT32_MAX);
}
static cairo_surface_t *
ewmh_window_icon_from_reply(xcb_get_property_reply_t *r)
{
uint32_t *data;
uint64_t len;
if(!r || r->type != XCB_ATOM_CARDINAL || r->format != 32 || r->length < 2)
return 0;
data = (uint32_t *) xcb_get_property_value(r);
if (!data)
return 0;
/* Check that the property is as long as it should be, handling integer
* overflow. <uint32_t> times <another uint32_t casted to uint64_t> always
* fits into an uint64_t and thus this multiplication cannot overflow.
*/
len = data[0] * (uint64_t) data[1];
if (!data[0] || !data[1] || len > r->length - 2)
return 0;
return draw_surface_from_data(data[0], data[1], data + 2);
}
/** Get NET_WM_ICON.
* \param cookie The cookie.
* \return The number of elements on stack.
*/
cairo_surface_t *
ewmh_window_icon_get_reply(xcb_get_property_cookie_t cookie)
{
xcb_get_property_reply_t *r = xcb_get_property_reply(globalconf.connection, cookie, NULL);
cairo_surface_t *surface = ewmh_window_icon_from_reply(r);
p_delete(&r);
return surface;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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