Try to solve the problem of spurious EOF chars in long lines of text

sent to interactive subprocesses.
* sysdep.c (child_setup_tty): Do not enable ICANON any more.
(system_process_attributes): Remove unused var `ttotal'.
* process.c (send_process): Don't bother breaking long line with EOF
chars when talking to ttys any more.
(wait_reading_process_output): Output a warning when called in such
a way that it could block without being interruptible.

1 files changed, 4 insertions, 33 deletions

diff --git a/src/process.c b/src/process.c
index 34aa2c4fcff..7e8f4cc57bc 100644
--- a/src/process.c
+++ b/src/process.c
@@ -4643,6 +4643,10 @@ wait_reading_process_output (time_limit, microsecs, read_kbd, do_display,
   FD_ZERO (&Connecting);
 #endif
 
+  if (time_limit == 0 && wait_proc && !NILP (Vinhibit_quit)
+      && !(CONSP (wait_proc->status) && EQ (XCAR (wait_proc->status), Qexit)))
+    message ("Blocking call to accept-process-output with quit inhibited!!");
+
   /* If wait_proc is a process to watch, set wait_channel accordingly.  */
   if (wait_proc != NULL)
     wait_channel = wait_proc->infd;
@@ -5768,34 +5772,6 @@ send_process (proc, buf, len, object)
         {
           int this = len;
 
-          /* Decide how much data we can send in one batch.
-             Long lines need to be split into multiple batches.  */
-          if (p->pty_flag)
-            {
-              /* Starting this at zero is always correct when not the first
-                 iteration because the previous iteration ended by sending C-d.
-                 It may not be correct for the first iteration
-                 if a partial line was sent in a separate send_process call.
-                 If that proves worth handling, we need to save linepos
-                 in the process object.  */
-              int linepos = 0;
-              unsigned char *ptr = (unsigned char *) buf;
-              unsigned char *end = (unsigned char *) buf + len;
-
-              /* Scan through this text for a line that is too long.  */
-              while (ptr != end && linepos < pty_max_bytes)
-                {
-                  if (*ptr == '\n')
-                    linepos = 0;
-                  else
-                    linepos++;
-                  ptr++;
-                }
-              /* If we found one, break the line there
-                 and put in a C-d to force the buffer through.  */
-              this = ptr - buf;
-            }
-
           /* Send this batch, using one or more write calls.  */
           while (this > 0)
             {
@@ -5899,11 +5875,6 @@ send_process (proc, buf, len, object)
               len -= rv;
               this -= rv;
             }
-
-          /* If we sent just part of the string, put in an EOF (C-d)
-             to force it through, before we send the rest.  */
-          if (len > 0)
-            Fprocess_send_eof (proc);
         }
     }
   else