Laura: Created page with "The ON ERROR statement has been augmented to support GOSUB in addition to GOTO and SYSTEM. This is a very important feature because it permits multiple nested ..."

2014-09-23T03:24:43Z

Created page with "The ON ERROR statement has been augmented to support GOSUB in addition to GOTO and SYSTEM. This is a very important feature because it permits multiple nested ..."

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The [[ON ERROR]] statement has been augmented to support [[GOSUB]] in addition to [[GOTO]] and [[SYSTEM]]. This is a very important feature because it permits multiple nested error processes and [[ON FKEY]] GOSUB label-reference. Programmers are no longer limited to the simple [[RETRY]] or [[CONTINUE]] to return from an interrupt.

A [[RETURN]] from such an interrupt will resume where [[RETRY]] does unless the error condition occurs at the completion of an Input/Output operation, in which case it performs a [[CONTINUE]].

====Notes====
*The keyboard buffer is cleared by ON error GOSUB interrupts.
*By default, BR checks for Fkey interrupts every eight statements. Use the [[BREAK]] configuration statement to vary this.
*If an ON FKEY GOSUB / GOTO statement catches an interrupt during a SLEEP operation the Sleep is immediately terminated. In the case of GOSUB, a RETURN resumes with the clause following the Sleep.

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On Error Gosub - Revision history

Laura: Created page with "The ON ERROR statement has been augmented to support GOSUB in addition to GOTO and SYSTEM. This is a very important feature because it permits multiple nested ..."