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Ignore signals during command execution

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Disable signal handlers in wins_prepare_external() and reactivate them
in wins_unprepare_external().

Before, it was possible that resizing the window during editor/pager
mode resulted in the calcurse main screen appearing on top.

Addresses BUG#9.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
This commit is contained in:
Lukas Fleischer 2012-11-28 21:42:54 +01:00
parent 7f16e1c1d3
commit 8ae75f3ca7
3 changed files with 20 additions and 0 deletions
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2
src/calcurse.h
View File

@ -883,6 +883,8 @@ void recur_apoint_paste_item(void);
/* sigs.c */
void sigs_init(void);
unsigned sigs_set_hdlr(int, void (*)(int));
void sigs_ignore(void);
void sigs_unignore(void);
/* todo.c */
extern llist_t todolist;

14
src/sigs.c
View File

@ -108,3 +108,17 @@ void sigs_init()
|| !sigs_set_hdlr(SIGINT, SIG_IGN))
exit_calcurse(1);
}
/* Ignore SIGWINCH and SIGTERM signals. */
void sigs_ignore(void)
{
sigs_set_hdlr(SIGWINCH, SIG_IGN);
sigs_set_hdlr(SIGTERM, SIG_IGN);
}
/* No longer ignore SIGWINCH and SIGTERM signals. */
void sigs_unignore(void)
{
sigs_set_hdlr(SIGWINCH, generic_hdlr);
sigs_set_hdlr(SIGTERM, generic_hdlr);
}

4
src/wins.c
View File

@ -591,16 +591,20 @@ void wins_prepare_external(void)
clear();
wins_refresh();
endwin();
sigs_ignore();
}
/* Restore windows when returning from an external command. */
void wins_unprepare_external(void)
{
sigs_unignore();
reset_prog_mode();
clearok(curscr, TRUE);
curs_set(0);
ui_mode = UI_CURSES;
wins_refresh();
wins_reinit();
wins_update(FLAG_ALL);
if (notify_bar())
notify_start_main_thread();
}