Adding getenv, setenv and unsetenv.

* lib.c (setenv, unsetenv): Changed static functions to external.
Moved them out of the #if !HAVE_TIMEGM block.

* lib.h (setenv, unsetenv): Declared.

* sysif.c (getenv_wrap, setenv_wrap, unsetenv_wrap): New functions.
(sysif_init): Registered getenv, setenv and unsetenv.

* txr.1: Documented getenv, setenv and unsetenv.

* tl.vim, txr.vim: Regenerated.

1 files changed, 4 insertions, 0 deletions

diff --git a/lib.h b/lib.h
index 5657bf85..052b46a8 100644
--- a/lib.h
+++ b/lib.h
@@ -848,6 +848,10 @@ val obj_print(val obj, val stream);
 val obj_pprint(val obj, val stream);
 val tostring(val obj);
 val tostringp(val obj);
+#if !HAVE_SETENV
+void setenv(const char *name, const char *value, int overwrite);
+void unsetenv(const char *name);
+#endif
 val time_sec(void);
 val time_sec_usec(void);
 val time_string_local(val time, val format);