expanduser: no posix()

Author: scivision

+stdlib/expanduser.m

@@ -12,16 +12,14 @@
   p {mustBeTextScalar}
 end
 
-e = stdlib.posix(char(p));
-
+e = char(p);
 L = length(e);
-if L == 0 || e(1) ~= '~' || (L > 1 && ~strcmp(e(1:2), '~/'))
-  % noop
-else
+ok = L > 0 && e(1) == '~';
+ok = ok && (L == 1 || e(2) == '/' || (ispc && e(2) == '\'));
+
+if ok
   home = stdlib.homedir();
-  if isempty(home)
-    % noop
-  elseif L < 2
+  if any(L == [1,2])
     e = home;
   else
     e = strcat(home, '/', e(3:end));

+stdlib/homedir.m

@@ -8,8 +8,6 @@
   h = getenv("HOME");
 end
 
-h = stdlib.posix(h);
-
 end
 
 %!assert(!isempty(homedir()))

test/TestExpanduser.m

@@ -6,8 +6,8 @@
 {"~abc", "~abc"}, ...
 {'~', stdlib.homedir()},...
 {"~", string(stdlib.homedir())}, ...
-{'~/', strcat(stdlib.homedir(), '/')},...
-{"~/", stdlib.homedir() + "/"}, ...
+{'~/',stdlib.homedir()},...
+{"~/", string(stdlib.homedir())}, ...
 {"~/c", stdlib.homedir() + "/c"}, ...
 {"~//c", stdlib.homedir() + "//c"}};
 end