New functions starts-with and ends-with.

* eval.c (eval_init): Register starts-with and ends-with
intrinsics.

* lib.c (starts_with, ends_with): New functions.

* lib.c (starts_with, ends_with): Declared.

* txr.1: Documented.

1 files changed, 2 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index 3ca3a52c..b4beaa9a 100644
--- a/eval.c
+++ b/eval.c
@@ -5754,6 +5754,8 @@ void eval_init(void)
   reg_fun(intern(lit("pos-min"), user_package), func_n3o(pos_min, 1));
   reg_fun(intern(lit("mismatch"), user_package), func_n4o(mismatch, 2));
   reg_fun(intern(lit("rmismatch"), user_package), func_n4o(rmismatch, 2));
+  reg_fun(intern(lit("starts-with"), user_package), func_n4o(starts_with, 2));
+  reg_fun(intern(lit("ends-with"), user_package), func_n4o(ends_with, 2));
   reg_fun(intern(lit("take"), user_package), func_n2(take));
   reg_fun(intern(lit("take-while"), user_package), func_n3o(take_while, 2));
   reg_fun(intern(lit("take-until"), user_package), func_n3o(take_until, 2));