New functions: trim-short-suffix, trim-long-suffix.

* lib.c, lib.h (chk_substrdup): New function.

* stream.c, stream.h (trim_short_suffix, trim_long_suffix):
New functions.
(stream_init): trim-short-suffix and trim-long-suffix
intrinsics registered.

* tests/018/path.tl: New tests.

* txr.1: Documented.

* stdlib/doc-syms.tl: Updated.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index de4f858a..07ff1edf 100644
--- a/lib.h
+++ b/lib.h
@@ -717,6 +717,7 @@ mem_t *chk_manage_vec(mem_t *old, size_t oldfilled, size_t newfilled,
 wchar_t *chk_wmalloc(size_t nwchar);
 wchar_t *chk_wrealloc(wchar_t *, size_t nwchar);
 wchar_t *chk_strdup(const wchar_t *str);
+wchar_t *chk_substrdup(const wchar_t *str, size_t off, size_t len);
 char *chk_strdup_utf8(const char *str);
 unsigned char *chk_strdup_8bit(const wchar_t *str);
 mem_t *chk_copy_obj(mem_t *orig, size_t size);