+ bool addToMathRow(MathRow & mrow, MetricsInfo & mi) const
+ {
+ // macro arguments are in macros
+ LATTEST(mi.base.macro_nesting > 0);
+ if (mi.base.macro_nesting == 1)
+ mi.base.macro_nesting = 0;
+
+ MathRow::Element e_beg(MathRow::BEG_ARG, mi);
+ e_beg.macro = mathMacro_;
+ e_beg.ar = &mathMacro_->cell(idx_);
+ mrow.push_back(e_beg);
+
+ mathMacro_->macro()->unlock();
+ bool has_contents;
+ // handle default macro arguments
+ if (!mathMacro_->editMetrics(mi.base.bv)
+ && mathMacro_->cell(idx_).empty())
+ has_contents = def_.addToMathRow(mrow, mi);
+ else
+ has_contents = mathMacro_->cell(idx_).addToMathRow(mrow, mi);
+ mathMacro_->macro()->lock();
+
+ // if there was no contents, and the contents is editable,
+ // then we insert a box instead.
+ if (!has_contents && mi.base.macro_nesting == 0) {
+ MathRow::Element e(MathRow::BOX, mi);
+ e.color = Color_mathline;
+ mrow.push_back(e);
+ has_contents = true;
+ }
+
+ if (mi.base.macro_nesting == 0)
+ mi.base.macro_nesting = 1;
+
+ MathRow::Element e_end(MathRow::END_ARG, mi);
+ e_end.macro = mathMacro_;
+ e_end.ar = &mathMacro_->cell(idx_);
+
+ mrow.push_back(e_end);
+
+ return has_contents;
+ }
+ ///