mailing-list for TeXmacs Users

[Alvaro Tejero Cantero <address@hidden>]

Hello,

You're right that "var" doesn't get assigned, but the problem is that I 
do not know how to assign it __inside a macro__ and __before the 
action__, which is what I need for the "active citation"

Look at the following code (indented for readability):


<assign|bcite|
 <macro|x|
  <assign|bibfilename|
   <find-file|.|/home/qoptik/Literatur|<merge|<arg|x>|.pdf>>>
  <action|<arg|x>|
   (with s (get-env "bibfilename") (display* "bname=" (substring s 7
   (string-length s))))>>>


When clicking in <bcite|Simon1994a> it produces in the terminal:


<unnamed port>:1:52: In procedure substring in expression (substring s 
7 ...):
<unnamed port>:1:52: Argument 2 out of range: 7


So bibfilename is not assigned. I remember trying also to put the 
assign bibfilename statement outside the macro (?) and using a 
<with|bibfilename|<find-file|...>|<action|x|...>>, but with no results.

Do you know how to assign inside a macro?


Many, many thanks,  Alvaro.



Henri Lesourd wrote:
> Alvaro Tejero Cantero wrote:
>
> > Hello,
> >
> > I am still fiddling with it: for the path of the file, I would like to 
> > use find-file, since it searches in several directories (i.e. first 
> > locally, then a repository of pdf files...). But 
> > <find-file|path1|path2|<merge|key|.pdf>> gives me a url like
> >
> > file:///home/qoptik/Literatur/Simon1994a.pdf
> >
> > which acroread doesn't like. So my current problem is getting 
> > substring to work in order to strip file:// (7 characters) out of 
> > find-files' output:
> >
> >   <action|stripme|(display (substring (get-env "var") 7 9))>
> >
> > TeXmacs complains in the terminal:
> >
> >   <unnamed port>:1:10: In procedure substring in expression (substring
> >   (get-env "var") 2 ...):
> >   <unnamed port>:1:10: Argument 2 out of range: 2
> >
> >
> > [Afterwards I would substitute '9' with (string-lenght (get-var 
> > "var")) or, better (string-length s) if I manage to (let s (get-var 
> > "var")), which I don't, in the body of the action, prior to the 
> > (system... ) call.]
>
>
> Most probably, the "var" variable has no value when you do :
> <<
> <action|stripme|(display (substring (get-env "var") 7 9))>
>  >>
>
> what output do you obtain if you write :
> <<
> <action|stripme|(display* "{{" (get-env "var") "}}")>
>  >>
>
> if you just get :
> <<
> {{}}
>  >>
>
> on the console when you double-click the "stripme", then it means that 
> your "var" variable
> has not been defined. By the way, the following code :
> <<
> <assign|var|<find-file|~|.bashrc>>
> <action|stripme|(begin (display* "var=" (get-env "var") "\n"))>
> <action|stripme2|(with s (get-env "var") (display* "var=" (substring s 7 
> (string-length s)) "\n"))>
>  >>
>
> perfectly works, when clicking first on "stripme", next on "stripme2", I 
> obtain :
> <<
> var=file:///home/henri/.bashrc
> var=/home/henri/.bashrc
>  >>