- if (c == Paragraph::META_INSET)
- return par_->getInset(pos)->width();
-
- if (!isPrintable(c))
- return theFontMetrics(font).width(c);
-
- Language const * language = font.language();
- if (language->rightToLeft()) {
- if (language->lang() == "arabic_arabtex" ||
- language->lang() == "arabic_arabi" ||
- language->lang() == "farsi") {
- if (Encodings::isComposeChar_arabic(c))
- return 0;
- c = par_->transformChar(c, pos);
- } else if (language->lang() == "hebrew" &&
- Encodings::isComposeChar_hebrew(c))
- return 0;
- }
+ if (Inset const * inset = par_->getInset(pos))
+ return insetDimension(inset).wid;
+
+ char_type const c = par_->getChar(pos);
+
+ if (c == '\t')
+ return 4 * theFontMetrics(font).width(' ');
+
+ // Note that this function is only called in
+ // RowPainter::paintText, and only used for characters that do
+ // not require handling of compose chars or ligatures. It can
+ // therefore be kept simple.