🚀 go-pugleaf

In article <9988996@MVB.SAIC.COM>, DL24794%UAFSYSB.BITNET@SHSU.edu (Daniel H. Luecking) writes:
> 
>> In article <1993Jan5.143540.15048@wraxall.inmos.co.uk>,
>> des@inmos.co.uk (David Shepherd) writes:
>> > 1sp *is* useful sometimes when you need something to be different from
>> > 0pt but not visibly so! i.e. giving a font a slant of 1sp makes
>> > LaTeX think that it is an italic font when using \em - this can
>> > sometimes be useful.
>>
>> How so?  LaTeX doesn't really care what the actual font is that \em
>> uses.  `Giving a font a slant' requires running off a special version
>> of the font using Metafont.  If you don't want that font to actually
>> look different, why not just \let\em\relax ?

\em uses one of the font parameters to determine if the font is
slanted to decide whether to switch to \rm or \it. In the setup
here we are using a PostScriptized version of LaTeX and the .tfm files,
which I assume are generated from .afm files, all have that parameter
set to 0 - hence I add 1sp to it for all the italic PostScript fonts.
In this way \em will notice that times-roman-italic is a slanted font
and so switch to times-roman rather than the original behaviour
of deciding times-roman-italic was unslanted so it emphasised by switching
to times-romam-italic - i.e. not very emphatic!


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david shepherd: des@inmos.co.uk                     tel: 0454-616616 x 625
                inmos ltd, 1000 aztec west, almondsbury, bristol, bs12 4sq
                New Year Resolution for 1993: Start using capital letters.