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, 7 insertions, 6 deletions

diff --git a/lib.c b/lib.c
index 80f1a179..d7503294 100644
--- a/lib.c
+++ b/lib.c
@@ -7173,11 +7173,9 @@ val make_time(val year, val month, val day,
   return make_time_impl(mktime, year, month, day, hour, minute, second, isdst);
 }
 
-#if !HAVE_TIMEGM
-
 #if !HAVE_SETENV
-static void
-setenv(const char *name, const char *value, int overwrite)
+
+void setenv(const char *name, const char *value, int overwrite)
 {
   int len = strlen(name)+1+strlen(value)+1;
   char *str = (char *) chk_malloc(len);
@@ -7186,13 +7184,16 @@ setenv(const char *name, const char *value, int overwrite)
   putenv(str);
 }
 
-static void
-unsetenv(const char *name)
+void unsetenv(const char *name)
 {
   setenv(name, "", 1);
 }
+
 #endif
 
+
+#if !HAVE_TIMEGM
+
 static time_t timegm_hack(struct tm *tm)
 {
     time_t ret;