New function: match-fboundp.

User vapnik spaknik was asking in the mailing list whether
there is an existence test for TXR pattern functions. Now
there is.

* eval.c (eval_init): Register match-fboundp intrinsic.

* match.c (match_fbound): New function.

* match.h (match_fbound): Declared.

* tests/011/txr-case.txr: New test cases.

* txr.1: Documented.

* stdlib/doc-syms.tl: Updated.

1 files changed, 1 insertions, 0 deletions

diff --git a/match.h b/match.h
index d92740ea..b697cc0a 100644
--- a/match.h
+++ b/match.h
@@ -34,6 +34,7 @@ val match_expand_keyword_args(val elem);
 val match_expand_elem(val elem);
 val match_filter(val name, val arg, val other_args);
 val match_fun(val name, val args, val input, val files);
+val match_fboundp(val name);
 val include(val specline);
 val extract(val spec, val filenames, val bindings);
 void match_reg_var(val sym);