[XeTeX] fontsizes and interlinear space

Pablo Rodríguez oinos at web.de
Tue Aug 22 21:29:27 CEST 2006

Jonathan Kew wrote:
> On 22 Aug 2006, at 6:01 pm, Pablo Rodríguez wrote:
>>>> Using XeLaTeX, I experience something that I have never  
>>>> experienced in
>>>> LaTeX (as far as I can remember). Paragraphs do have different
>>>> interlinear spaces within the same paragraph.
> Standard LaTeX will do this too, if you use glyphs (or accents) that  
> cause the lines to be high/deep enough that they would otherwise  
> clash. But the CM fonts and standard LaTeX styles, at least, are  
> designed such that accented capitals don't normally cause this.
>> I'm not sure, but I think that XeLaTeX (or whatever it might be) seems
>> not to get the font size from the ascent and descent (which is  
>> common to
>> all glyphs), but from the actual glyph.
> Indeed it does. It didn't, in earlier versions, but users often  
> requested this, and it was finally implemented in release 0.993 (June).
> You can switch to the earlier behavior, if you really want, by  
> setting \XeTeXuseglyphmetrics=0 in your document.
> What you might want to do is set the line spacing slightly wider than  
> LaTeX's default, if you're using a font like this, so that the lines  
> are always spaced sufficiently to allow accented uppercase letters  
> without the risk of clashes. For example, rather than 12pt text on  
> 14.5pt leading, you might want to use 12/15.5 or even 12/16pt. (I'm  
> sure the experienced LaTeX users here can tell you an easy way to set  
> this.)

Thanks for your explanation, Jonathan.

I think it would be useful that XeTex (or even fontspec) gives a warning
when the line spacing should be changed. Otherwise, it is not always
easy to detect when glyphs can clash because of insufficient line spacing.

Thanks again for your help,


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