<?=RexxExpression>

A "variable" of this type allows you to evaluate a REXX expression, without using a separate #evaluate command. Each time you use it, a relatively slow REXX "interpret" command is required, so for performance reasons it is recommended that you:

• Use "<??Variable>" to obtain the contents of a single REXX or environment variable.

• Use a single "#evaluate" command and store the result for reuse rather than using the same REXX "variable" expression multiple times.

The REXX expression has the limitation that it must not by default contain the ">" character! Please see the ReplacementTags option for example below for more details.

This is a Standard Definition which always exists (you don't need to #define it). Note that you can create your own variations or completely new ones (see the examples).

Example

;--- 5 '*' chars ----
<?=copies('*',2)||copies('*',3)>

;--- Next line is invalid (compile will fail) ---
<?=copies('*',2)||copies('>',3)>

Example - Expression needs to contain ">"

The "<br>" in the following (extracted from macro) will by default cause a failure (as PPWIZARD thinks this is the end of the symbol):

<?=ReplaceString("{$authors}", ",", "<br>")>

One possible solution (remove the greater than sign):

<?=ReplaceString("{$authors}", ",", "<br" || "3E"x)>
<?=ReplaceString("{$authors}", ",", "<br" || d2c(62))>

Another (not last) possible solution (prevent the greater than sign being 'special'):

#option PUSH ReplacementTags="[]$?"     ;;Substitute [] for <>
        [?=ReplaceString("{$authors}", ",", "<br>")]
#option POP                             ;;Restore original values

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PPWIZARD Manual

Saturday May 28 2022 at 2:55pm