New function: count.

The general count function, with keyfun and testfun,
is noticeably absent. Let's implement it.

* lib.[ch] (count): New function.

* eval.c (eval_init): Register count intrinsic.

* tests/012/seq.tl: Some tests for count.

* txr.1: Add count to count-if section. Revise documentation
based on pos/pos-if.

* stdlib/doc-syms.tl: Updated.

1 files changed, 1 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index 7f207de9..7fdc9627 100644
--- a/eval.c
+++ b/eval.c
@@ -7016,6 +7016,7 @@ void eval_init(void)
   reg_fun(intern(lit("countql"), user_package), func_n2(countql));
   reg_fun(intern(lit("countq"), user_package), func_n2(countq));
   reg_fun(intern(lit("count-if"), user_package), func_n3o(count_if, 2));
+  reg_fun(intern(lit("count"), user_package), func_n4o(count, 2));
   reg_fun(intern(lit("posqual"), user_package), func_n2(posqual));
   reg_fun(intern(lit("rposqual"), user_package), func_n2(rposqual));
   reg_fun(intern(lit("posql"), user_package), func_n2(posql));