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Problems with an OrIfPlain type definition

From: Barrie Stott
Subject: Problems with an OrIfPlain type definition
Date: Fri, 14 Sep 2001 08:54:03 +0100
User-agent: Mutt/1.0.1i

I have the following in a setup file.

def @LetterType { ch }
def @OrIfch
        precedence 80
        left x
        right y
        @LetterType @Case {
                me @Yield x
                ch @Yield y

and I use it as in

@Use { @DocumentSetup
        @StartOddFoot { @Null @OrIfch { /1c }}}

This seems to select things properly but if I use `/1c' instead of `{ /1c }'
it is useless, behaving as though I had used

        @StartOddFoot { /1c }


A more general question is: what can replace x and y in OrIfch? The following
snippet works as I expect and it can be seen to have the same structure as the
body of @OrIfch. However, if I recast it to use @OrIfch, it seems to give
something akin to both x and y.

@LetterType @Case {
        me @Yield {
                                {                       9 Bankfield
                                        /1vo  Westhoughton
                                        /1vo    Bolton   BL5  2QG
                                        /1vo    Tel: 01942  817892
                                        /1vo    @I -2p @Font { address@hidden }
                        lowerright { @Date }
                @B @To
        ch @Yield {
                @Place address@hidden 
                @RightDisplay { @Date @TL }
                @LLP @B @To

Any help, to get me further up the lout learning curve, would be much


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