[asdf-devel] Make the CL syntax predictable

Daniel Herring dherring at tentpost.com
Fri Mar 28 22:37:48 UTC 2014

Hi all,

Would it be possible to have a special header in asdf files indicate that 
the contained system(s) should be loaded using the new syntax mechanism?

Something like the "#lang" mechanism in Racket, file variables in Emacs, 

Here's a fairly CL-friendly format.  Read the first line into a string 
input stream.  Start with peek-char to skip the leading semicolons.  Then 
bind the standard readtable, with *read-eval* to nil, and invoke read. 
If it is asdf:config, then read the next form, expecting a list of 
settings; otherwise use the old defaults.

;; asdf:config '(asdf:+clean-readtable+)

To me, the big question in such a scheme is how much time it adds to the 
parsing process.

- Daniel

More information about the asdf-devel mailing list