eliminate unnecessary uses of octave:: namespace qualifier Affected files: graphics-init.cc, octave-qscintilla.cc, octave-qobject.h, qt-application.h, workspace-view.cc, call-stack.cc, dynamic-ld.cc, error.cc, error.h, event-manager.h, fcn-info.cc, ft-text-renderer.cc, gl-render.cc, gl2ps-print.cc, graphics-toolkit.cc, input.cc, load-path.cc, oct-hist.cc, oct-stream.cc, pager.cc, stack-frame.cc, symscope.cc, sysdep.cc, __ode15__.cc, cdef-class.cc, ov-fcn-handle.cc, ov.cc, ov.h, oct-parse.yy, pt-classdef.h, pt-eval.cc, Range.cc, Range.h, dir-ops.h, file-stat.cc, lo-sysdep.cc, lo-utils.cc, oct-glob.cc, and url-transfer.cc.

--- a/libinterp/corefcn/input.cc	Mon Oct 05 13:57:00 2020 -0400
+++ b/libinterp/corefcn/input.cc	Mon Oct 05 15:19:15 2020 -0400
@@ -926,8 +926,7 @@
                  "converting from codepage '%s' to UTF-8: %s",
                  encoding.c_str (), std::strerror (errno));
 
-        octave::unwind_action free_utf8_str
-          ([=] () { ::free (utf8_str); });
+        unwind_action free_utf8_str ([=] () { ::free (utf8_str); });
 
         src_str = std::string (reinterpret_cast<char *> (utf8_str), length);
       }