Resolve #628: "TextView: spaces acting as non-breaking whitespace if :left- or :right-margin is set"
Reverts part of Commit 25b67af3
The 'width' part of the commit is the cause of #628 (closed): requisition->width is first set to priv->layout->width, which already includes priv->left_border + priv->right_border. It's a bit labyrinthine, but essentially:
- layout->width is set in update_layout_size() (gtktextlayout.c line 992) as the maximum line width, and
- the line width is set to display->width in gtk_text_layout_real_wrap() (gtktextlayout.c line 1183), and
- display->width is set to text_pixel_width + h_margin + h_padding in gtk_text_layout_get_line_display() (gtktextlayout.c line 2584), and
- h_margin + h_padding is the same as priv->left_border + priv->right_border.
Adding it again leads to an increase in the size-request, which results in wider lines; rinse and repeat.
Closes #628 (closed)