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[Frank <address@hidden>]

Hi,

Thanks for the response. I wonder raise some technical questions:

1. What is the difference between "true" and (macro "true") ? I see the 
later in the standard packages, like (section-base.ts):

(assign "sectional-short-style" (macro "true"))

Here is a usage:

(assign "appendix-title" (macro "title" (style-with "src-compact" "none" 
(if (sectional-short-style) (section-title (arg "title")) (chapter-title 
(arg "title"))))))

The literal difference is (sectional-short-style) allows (macro "true"), 
while (value "sectional-short-style") will lead to an error. However, I 
don't know whether one has deeper reason to prefer one over another?

2. Why does it work to use "compound" while my previous version does 
not? I guess that it is related to the evaluation order of (if), but I 
don't know how.

By the way, I hope that these will be put into some Wiki document of 
TeXmacs.

Best wishes,

Frank

On 25/07/2020, TeXmacs wrote:
> Hi Frank,
>
> A better way is to have several macros for the "shown" and "hidden" versions
> and then to use the 'compound' program for applying the appropriate version
> to the body depending on the value of "draft-mode".
>
> (document (assign "draft-mode" "true") (assign "draft-hidden" (macro "body" "")) (assign "draft-shown" (macro "body" (arg "body"))) (assign 
> "draft" (macro "body" (compound (if (value "draft-mode") (value "draft-shown") (value "draft-hidden")) (arg "body")))) "")
>
> Best wishes, --Joris
>
>
> On Sat, Jul 25, 2020 at 05:48:46PM +0200, Frank wrote:
> > Dear all,
> >
> > I am trying to implement a macro which allows me to show texts
> > according to the value of a variable. I tried the following:
> >
> > (document (assign "shown-draft" (macro "body" (if (draft-mode) (arg
> > "body")))) (assign "draft-mode" "true"))
> >
> > However, I see that this macro is buggy. For example,
> >
> > (shown-draft (document "s" "e" "alsdkjf asdlfja asdlfj asldkfj
> > asldfk jasldkfj lkasj alskdjf lkasjd  alsdkjfl jasdlkf jalsfj laskdj
> > flajsdf lkjasd lkjaslkfjlaksjdf lajs dflkjaslfkjlkj lajs ldksaj
> > lkajs lkfjsalk jask jfkls jladsj ljadslkj laskdj fljsd ljalksdf
> > jlaksdjf lkjaslkd fjalksjfd ljasl jasdlkf jlkajs lkasldk j"))
> >
> > Then this extremely long line does not break. I wonder how to deal
> > with this properly?
> >
> > Best,
> >
> > Frank
--
Best wishes!
Yours,