diff options
Diffstat (limited to 'doc/exit.n')
-rw-r--r-- | doc/exit.n | 8 |
1 files changed, 4 insertions, 4 deletions
@@ -22,10 +22,12 @@ system as the exit status. If \fIreturnCode\fR is not specified then it defaults to 0. .SH EXAMPLE +.PP Since non-zero exit codes are usually interpreted as error cases by the calling process, the \fBexit\fR command is an important part of signaling that something fatal has gone wrong. This code fragment is useful in scripts to act as a general problem trap: +.PP .CS proc main {} { # ... put the real main code in here ... @@ -33,7 +35,7 @@ proc main {} { if {[catch {main} msg options]} { puts stderr "unexpected script error: $msg" - if {[info exist env(DEBUG)]} { + if {[info exists env(DEBUG)]} { puts stderr "---- BEGIN TRACE ----" puts stderr [dict get $options -errorinfo] puts stderr "---- END TRACE ----" @@ -43,9 +45,7 @@ if {[catch {main} msg options]} { \fBexit\fR 2 } .CE - .SH "SEE ALSO" exec(n) - .SH KEYWORDS -exit, process +abort, exit, process |