DESCRIPTION
The catch command may be used to prevent errors from aborting
command interpretation. Catch calls the Tcl interpreter recursively
to execute script, and always returns a TCL_OK code, regardless of
any errors that might occur while executing script. The return
value from catch is a decimal string giving the
code returned by the Tcl interpreter after executing script.
This will be 0 (TCL_OK) if there were no errors in script;
otherwise
it will have a non-zero value corresponding to one of the exceptional
return codes (see tcl.h for the definitions of code values). If the
varName argument is given, then it gives the name of a variable;
catch will set the variable to the string returned
from script (either a result or an error message).
Note that catch catches all exceptions, including those
generated by break and continue as well as errors.
KEYWORDS
catch, error
Last change:
[ tcl8.0b1 | tk8.0b1 | X-ref ]
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