diff options
Diffstat (limited to 'doc/tell.n')
| -rw-r--r-- | doc/tell.n | 7 |
1 files changed, 3 insertions, 4 deletions
@@ -5,7 +5,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: tell.n,v 1.9 2005/05/10 18:34:03 kennykb Exp $ +'\" RCS: @(#) $Id: tell.n,v 1.10 2008/10/17 10:22:25 dkf Exp $ '\" .so man.macros .TH tell n 8.1 Tcl "Tcl Built-In Commands" @@ -16,7 +16,6 @@ tell \- Return current access position for an open channel .SH SYNOPSIS \fBtell \fIchannelId\fR .BE - .SH DESCRIPTION .PP Returns an integer string giving the current access position in @@ -31,7 +30,9 @@ Tcl standard channel (\fBstdin\fR, \fBstdout\fR, or \fBstderr\fR), the return value from an invocation of \fBopen\fR or \fBsocket\fR, or the result of a channel creation command provided by a Tcl extension. .SH EXAMPLE +.PP Read a line from a file channel only if it starts with \fBfoobar\fR: +.PP .CS # Save the offset in case we need to undo the read... set offset [\fBtell\fR $chan] @@ -43,9 +44,7 @@ if {[read $chan 6] eq "foobar"} { seek $chan $offset } .CE - .SH "SEE ALSO" file(n), open(n), close(n), gets(n), seek(n), Tcl_StandardChannels(3) - .SH KEYWORDS access position, channel, seeking |