@IF (format 5) - Query EDT parameter settings

This format of the @IF statement can be used in EDT procedures or in L mode to query the operating mode that is currently set (see section “Introduction to the EDT operating modes”). Depending on the result, a specified string either is or is not processed as input.

Operation	Operands	L mode
@IF	OPERATING-MODE = { UNICODE |  COMPATIB-} :[text]

OPERATING-MODE=
	The EDT operating mode is checked.
UNICODE	The condition is fulfilled if EDT is in Unicode mode.
COMPATIBLE
	The condition is fulfilled if EDT is in compatibility mode.
text	EDT statement or data line. If the condition is fulfilled, the string is treated as if it had been entered at the prompt in L mode. In particular, the decision to interpret the text as data input or as a statement is made in accordance with the same rules (for more information, see section “L mode”). The text operand starts immediately after the character ':', i.e. any specified blanks form part of the operand and are taken over into the line in the case of data input. If text is not specified (although the colon is), then an empty line (line of length 0) is inserted.

Note

Using @IF with @RETURN as a statement outside of procedures may cause EDT to terminate (see the @RETURN statement).

Example

1.     @IF OP = C : @GOTO 5
2.     @SET #S2 = 'PROCEDURE ONLY RUNS IN COMPATIBILITY MODE'
3.     @PRINT #S2 N
4.     @HALT
5.     @CONTINUE
6.     ...other statements

The procedure results in the abnormal termination of EDT if it is not running in compatibility mode.