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(Output from Processes): New var `process-adaptive-read-buffering'.

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Kim F. Storm 2004-08-17 22:41:51 +00:00
parent 410bcc3168
commit bfa96fa20d
1 changed files with 10 additions and 0 deletions
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10
lispref/processes.texi
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@ -929,6 +929,16 @@ process and only then specify its buffer or filter function; no output
can arrive before you finish, if the code in between does not call any
primitive that waits.
@defvar process-adaptive-read-buffering
On some systems, when Emacs reads the output from a subprocess, the
output data is read in very small blocks, potentially resulting in
very poor performance. This behaviour can be remedied to some extent
by setting the variable @var{process-adaptive-read-buffering} to a
non-nil value (the default), as it will automatically delay reading
from such processes, thus allowing them to produce more output before
Emacs tries to read it.
@end defvar
It is impossible to separate the standard output and standard error
streams of the subprocess, because Emacs normally spawns the subprocess
inside a pseudo-TTY, and a pseudo-TTY has only one output channel. If