emacsclient -t should not suspend Emacs server

* lisp.h, sysdep.c (block_tty_out_signal, unblock_tty_out_signal):
New functions.
* term.c (init_tty): Use them instead of rolling our own code.
* sysdep.c (tcsetpgrp_without_stopping): Likewise.  Here, this
switches from 'signal' to 'pthread_sigmask', which is safer in
multithreaded applications.
* term.c (Fresume_tty): Don't bother dissociating if O_IGNORE_CTTY,
which has already arranged for that.
(dissociate_if_controlling_tty): If setsid fails, fall back on TIOCNOTTY.
This is the main part of the bug fix.

Fixes: debbugs:13387

1 files changed, 14 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index dd22c5388b0..f0d875b2027 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,17 @@
+2013-01-11  Paul Eggert  <eggert@cs.ucla.edu>
+
+        emacsclient -t should not suspend Emacs server (Bug#13387)
+        * lisp.h, sysdep.c (block_tty_out_signal, unblock_tty_out_signal):
+        New functions.
+        * term.c (init_tty): Use them instead of rolling our own code.
+        * sysdep.c (tcsetpgrp_without_stopping): Likewise.  Here, this
+        switches from 'signal' to 'pthread_sigmask', which is safer in
+        multithreaded applications.
+        * term.c (Fresume_tty): Don't bother dissociating if O_IGNORE_CTTY,
+        which has already arranged for that.
+        (dissociate_if_controlling_tty): If setsid fails, fall back on TIOCNOTTY.
+        This is the main part of the bug fix.
+
 2013-01-10  Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> (tiny change)
 
         * gtkutil.c (xg_initialize): Add ifdef HAVE_FREETYPE around