diff options
Diffstat (limited to 'doc/break.n')
| -rw-r--r-- | doc/break.n | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/doc/break.n b/doc/break.n index 32432eb..3e4ce5f 100644 --- a/doc/break.n +++ b/doc/break.n @@ -5,10 +5,8 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: break.n,v 1.3 2000/09/07 14:27:46 poenitz Exp $ -'\" -.so man.macros .TH break n "" Tcl "Tcl Built-In Commands" +.so man.macros .BS '\" Note: do not modify the .SH NAME line immediately below! .SH NAME @@ -16,12 +14,11 @@ break \- Abort looping command .SH SYNOPSIS \fBbreak\fR .BE - .SH DESCRIPTION .PP This command is typically invoked inside the body of a looping command such as \fBfor\fR or \fBforeach\fR or \fBwhile\fR. -It returns a TCL_BREAK code, which causes a break exception +It returns a 3 (\fBTCL_BREAK\fR) result code, which causes a break exception to occur. The exception causes the current script to be aborted out to the innermost containing loop command, which then @@ -29,9 +26,22 @@ aborts its execution and returns normally. Break exceptions are also handled in a few other situations, such as the \fBcatch\fR command, Tk event bindings, and the outermost scripts of procedure bodies. - +.SH EXAMPLE +.PP +Print a line for each of the integers from 0 to 5: +.PP +.CS +for {set x 0} {$x<10} {incr x} { + if {$x > 5} { + \fBbreak\fR + } + puts "x is $x" +} +.CE .SH "SEE ALSO" -catch(n), continue(n), for(n), foreach(n), while(n) - +catch(n), continue(n), for(n), foreach(n), return(n), while(n) .SH KEYWORDS abort, break, loop +'\" Local Variables: +'\" mode: nroff +'\" End: |