restore prior drop_slash

Author: scivision

+stdlib/canonical.m

@@ -42,7 +42,7 @@
   end
 end
 
-c =stdlib.posix(c);
+c = stdlib.posix(c);
 
 if ~strlength(c)
   c = stdlib.normalize(e);

+stdlib/drop_slash.m

@@ -8,16 +8,25 @@
   p {mustBeTextScalar}
 end
 
+s = stdlib.posix(p);
+
+uncslash = ispc() && startsWith(s, '//');
+
 % drop repeated slashes inside string
-d = regexprep(char(p), '/+', '/');
+d = regexprep(s, '/+', '/');
+
+L = strlength(d);
 
-% drop trailing slash "/" or "\", but preserve a single slash if that's the only character
-while strlength(d) > 1 && endsWith(d, {'/', '\'})
-  d = d(1:end-1);
+if L < 2
+  if uncslash
+    d = '//';
+  end
+elseif ~ispc() || (L ~= 3 || ~strcmp(d, stdlib.root(s)))
+  d = regexprep(d, '/$', '');
 end
 
-if ispc() && ~isempty(d) && strcmp(d, stdlib.root_name(p))
-  d = strcat(d, '/');
+if uncslash
+  d = strcat('/', d);
 end
 
 if isstring(p)

Readme_java.md

@@ -43,7 +43,6 @@ If desired (not used by Matlab-stdlib), one can use non-factory Java classes in
 and
 [GNU Octave](https://docs.octave.org/interpreter/Making-Java-Classes-Available.html).
 
-
 ## Configure Matlab JVM
 
 The Matlab Java interface is like other Matlab external languages such as Python.