Hi,

The attached hash.scm works fine with guile-1.8.  With Ubuntu 14.04's
guile-2.0.9 and latest GIT master

    5ded849 Convert slot allocation to use intsets

I do get output but compilation fails:

    $ guile  ./hash.scm
    ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
    ;;;       or pass the --no-auto-compile argument to disable.
    ;;; compiling /home/janneke/vc/verum/development/language/asd/./hash.scm
    ;;; WARNING: compilation of /home/janneke/vc/verum/development/language/asd/./hash.scm failed:
    ;;; ERROR: unknown hash-comma tag  hash
    cat

Is this a bug in the documentation, in guile, or ...?

I need to produce a json file from a guile tree that currently
looks like

   ((event0 (state (var .  value) ...) (trace (loc0 loc1 ...))) ... )

contents of the tree are symbols and numbers.  I hacked guile-json to
grok and produce symbols too.  So far so good for lists.  

However, json wants hash maps.  SRFI-10 hash looked like a nice ascii
data exchange format for hash maps.  (I would like to have pretty-print
use that notation too, as an alternative for the opaque

   #<hash-table b87480 0/31>

I get a suspicious feeling that I'm doing something very wrong if no one
else is using this, please enlighten me?

Greetings,
Jan