Filter input/parsing timing

[Nathan Bell]

Hello again,

Sorry about the previous "Filter problem" e-mail. I didn't work out my 
test case very well. The real problem I'm having is that lout seems to 
be passing along symbols, rather than values to a filter application. 
This is demonstrated below with the sort command (only on *nix). When 
the input to both @Works and @Broken is the same (ie Fred, Barney, 
Wilma) the output is expected to be the same (ie Barney, Fred, Wilma). 
However, since @Broken passes the names @a, @b, @c along to the filter 
application, the output is always the same as the input (ie Fred, 
Barney, Wilma).

Is there a way to force lout to analyze the value of @a, @b, and @c 
before it passes them along to the filter?

def @Works
right x
{
def @Filter { sort -i @FilterIn -o @FilterOut }
{
lines @Break x
}
}

def @Broken
named @a {}
named @b {}
named @c {}
{
   @Works address@hidden
@b
@c}
}

@SysInclude {doc}

address@hidden {loutdef.eim}
@Doc @Text @Begin

// Test here: //1i
@Works {Fred Flintstone
Barney Rubble
Wilma Flintstone}
//.5i Test 2 here: //1i
@Broken @a {Fred Flintstone} @b {Barney Rubble} @c {Wilma Flintstone}
//.5i end test

@End @Text