diff options
Diffstat (limited to 'doc/chan.n')
| -rw-r--r-- | doc/chan.n | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -4,7 +4,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: chan.n,v 1.24 2009/04/15 12:31:24 dkf Exp $ +'\" RCS: @(#) $Id: chan.n,v 1.25 2010/01/14 11:47:08 dkf Exp $ .so man.macros .TH chan n 8.5 Tcl "Tcl Built-In Commands" .BS @@ -544,7 +544,8 @@ Returns -1 if the channel was not opened for the mode in question. Creates a standalone pipe whose read- and write-side channels are returned as a 2-element list, the first element being the read side and the second the write side. Can be useful e.g. to redirect -separately stderr and stdout from a subprocess. To do this, spawn with "2>@" or +separately \fBstderr\fR and \fBstdout\fR from a subprocess. To do +this, spawn with "2>@" or ">@" redirection operators onto the write side of a pipe, and then immediately close it in the parent. This is necessary to get an EOF on the read side once the child has exited or otherwise closed its output. |