New function: str

The str function is like mkstring but allows a fill pattern
to be specified.

* eval.c (eval_init): str intrinsic registered.

* lib.[ch[ (str): New function.

* tests/015/str.tl: New file.

* txr.1: Documented.

* stdlib/doc-syms.tl: Updated.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index 59b20645..89f17f52 100644
--- a/lib.h
+++ b/lib.h
@@ -900,6 +900,7 @@ val string_8bit_size(const unsigned char *str, size_t sz);
 val mkstring(val len, val ch);
 val mkustring(val len); /* must initialize immediately with init_str! */
 val init_str(val str, const wchar_t *, val self);
+val str(val len, val pattern);
 val copy_str(val str);
 val upcase_str(val str);
 val downcase_str(val str);