Load structures with arbitrary string fieldnames (bug #50831, bug #46645). * ls-oct-text.h, ls-oct-text.cc (read_text_data): Consider additional optional bool argument to skip validation of input name. * ov-struct.cc (octave_struct::load_ascii, octave_scalar_struct::load_ascii): Call read_text_data with additional argument (skip_validation), set to true. * test/bug-50831/bug-50831.tst, test/bug-50831/module.mk: New test files.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/bug-50831/bug-50831.tst	Wed Apr 19 15:06:31 2017 +0200
@@ -0,0 +1,10 @@
+%!test
+%! filename = "save-text.var";
+%! s.("a-b") = "bad fieldname";
+%! unwind_protect
+%!   save ("-text", filename, "s");
+%!   filevar = load (filename);
+%!   assert (filevar.s, s);
+%! unwind_protect_cleanup
+%!   sts = unlink (filename);
+%! end_unwind_protect