Re: mkiv ppchtex greek character bug

[Mojca Miklavec <mojca.miklavec.lists@gmail.com>]

On Wed, Feb 25, 2009 at 09:23, Hans Hagen wrote:
> Alan BRASLAU wrote:
>>
>> I confirm that this now works using the current --context=alpha
>>
>>>> \enableregime[utf]
>>>
>>> mkiv is utf by default -)
>>
>> (But is still necessary to remain compatible with mkii)
>>
>>
>>>> the \alpha shows up, the α not (not sure why)
>>>
>>> you need the mathematical alpha
>>>
>>> \startTEXpage
>>>        \startchemical[width=fit,height=fit]
>>>
>>>  \chemical[ONE,Z0,MOV1,SB5,Z0][C_{\alpha},C_{\utfchar{"1D6FC}}]
>>>        \stopchemical
>>> \stopTEXpage
>>
>> OK, I see that TeX input is to be retained...
>>
>> However, note that $K_α$ works, so there must be some confusion in
>> interpreting unicode characters in the macros.
>
> ppchtex uses an upright and there is no alpha in the base lm font
>
> if you use
>
> \usetypescript[cambria]\setupbodyfont[cambria]
>
> you will get the right alpha

Hans,

maybe italic (mathematical) alpha should be a fallback for normal alpha in LM.

Personally, I have always been satisfied with italic alpha for
labeling C atoms or alpha chains of proteins. So it should also be OK
(not to say preferrable) to use "mathematical greek" inside chemistry
formulae.

Mojca
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