Commit 4b575b3c authored by Glenn Morris's avatar Glenn Morris
Browse files

Removed some unnecessary undef INTERRUPT_INPUTs from src/s

* src/s/bsd-common.h, src/s/cygwin.h: No need to undefine INTERRUPT_INPUT,
since nothing has defined it on these platforms.
parent e8df9267
......@@ -24,6 +24,9 @@
2012-07-11 Glenn Morris <>
* s/bsd-common.h, s/cygwin.h: No need to undefine INTERRUPT_INPUT,
since nothing has defined it on these platforms.
* s/aix4-2.h, s/bsd-common.h, s/cygwin.h, s/gnu-linux.h:
* s/irix6-5.h: Move SIGNALS_VIA_CHARACTERS to configure.
......@@ -47,10 +47,6 @@ along with GNU Emacs. If not, see <>. */
for X functions taking float or double parameters. */
/* Do not use interrupt_input = 1 by default, because in 4.3
we can make noninterrupt input work properly. */
/* First pty name is /dev/ptyp0. */
#define FIRST_PTY_LETTER 'p'
......@@ -17,29 +17,6 @@ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <>. */
/* Emacs can read input using SIGIO and buffering characters itself,
or using CBREAK mode and making C-g cause SIGINT.
The choice is controlled by the variable interrupt_input.
Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
Emacs uses the presence or absence of the SIGIO and BROKEN_SIGIO macros
to indicate whether or not signal-driven I/O is possible. It uses
INTERRUPT_INPUT to decide whether to use it by default.
SIGIO can be used only on systems that implement it (4.2 and 4.3).
CBREAK mode has two disadvantages
1) At least in 4.2, it is impossible to handle the Meta key properly.
I hear that in system V this problem does not exist.
2) Control-G causes output to be discarded.
I do not know whether this can be fixed in system V.
Another method of doing input is planned but not implemented.
It would have Emacs fork off a separate process
to read the input and send it to the true Emacs process
through a pipe. */
/* Define HAVE_PTYS if the system supports pty devices. */
#define HAVE_PTYS
#define PTY_ITERATION int i; for (i = 0; i < 1; i++) /* ick */
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