Re: conditionel include

[Xose Manoel Ramos <nospam@thanx>]

El Tue, Nov 30, 1999 at 07:13:37PM +0100, Jan Holler contaba:

><if foo
>#include 'test.wml'
>>

Well, this will work... but not as you expected. The include will be
done in pass #1 but then pass #2 will ignotre it:

Code:

<if foo
"
#include 'test.wml'
"
>

Pass 1:

<if foo
"
(.... The code you have in 'test.wml' .....)
"
>

Pass 2:

if 'foo':

(... the code you have in 'test.wml' ....)

if not 'foo':

<nothing>


But the file will be included anyway. This can slow things down a
little, but the importante thing is the result O:-)

>or does one get "a conditional reading-and-including" of a
>file "only" e.g. via eperl?

'eperl' or 'm4' can support this.

I leave 'eperl' for a more experienced user, I can tell you how in
m4:

  m4_ifelse("foo", "true", m4_include(test.wml))

Anyway, take care of an important point. If you include a file in
pass2, pass3 or pass4, it will skip the prior passes, so if you use
this code, all the MH and ePerl code will be useless. 

-- 
Saudos:
><ose        xmanoel@bigfoot.com   (Vigo/Galicia/Espaņa)
         http://pagina.de/xmanoel/
         http://w3.to/mikkeli/

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