+ case SKIP:
+ if (par2.empty() && !onoff_) {
+ if (!hint_.empty())
+ return hint_;
+ else
+ return bformat(_("Please specify a LaTeX length expression or a skip amount (%1$s)"),
+ from_ascii(subst(allowed_skips, ",", ", ")));
+ }
+ if (!isValidLength(par2) && tokenPos(allowed_skips, ',', par2) == -1)
+ return _("Not a valid LaTeX length expression or skip amount.");
+ if (unclosed)
+ return _("Unbalanced braces!");
+ return docstring();
+