ash: changes to login shell functionality

Upstream BusyBox supports the usual Unix functionality where the
login process adds a '-' prefix to the shell's argv[0].  Since
busybox-w32 doesn't have a login process this serves no purpose
and can be removed.

Instead it would be useful to have a way to invoke a login shell
without requiring any arguments.  Advantages would be:

- easier to configure busybox-w32 'ash' as the SSH login shell;

- double clicking on a shell binary could start a login shell.

Add 'lash' as an alias for 'ash' which starts a login shell without
requiring the '-l' option.

Saves 16 bytes.

1 files changed, 2 insertions, 1 deletions

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index bf9ae4603..6b610743a 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -1379,9 +1379,10 @@ int main(int argc UNUSED_PARAM, char **argv)
                 argv++;
 # endif
         applet_name = argv[0];
+# if !ENABLE_PLATFORM_MINGW32
         if (applet_name[0] == '-')
                 applet_name++;
-# if ENABLE_PLATFORM_MINGW32
+# else
         str_tolower(argv[0]);
         bs_to_slash(argv[0]);
         if (has_exe_suffix_or_dot(argv[0])) {