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From: Ingo Schwarze <>
To: "Anthony J. Bentley" <>
Subject: Re: Rendering of math symbols in ASCII mode
Date: Tue, 20 Jun 2017 18:44:25 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Hi Anthony,

Anthony J. Bentley wrote on Mon, Jun 19, 2017 at 10:27:00PM -0600:
> Ingo Schwarze writes:
>> Anthony Bentley wrote:

>>> .EQ
>>> roman erf ( x ) = 2 over {sqrt pi} int sub 0 sup x e sup {- t sup 2} dt
>>> .EN

>> Why roman?  Aren't function names usually set italic in mathematic
>> papers?

> My impression is that single-letter functions are italic but words
> are roman.

I stand corrected.  Actually, blowing the dust off my own diploma
thesis, i found several instances of arctan, exp, ln, log - all
roman.  Apparently, it has been too long since i looked at such

> Nitpick: \(sr is not the right way to do square roots in eqn(7).
> The sqrt keyword will wrap in parentheses.

I fully agree with that.

> (But I get your point.)

Once i came to the intermediate conclusion that we better work on
the level of character escape sequences than on the level of egn(7)
syntax, i considered all escapes, no matter whether they are needed
in the context of eqn(7).

>> For some character escape sequences that render to nothing in
>> groff -Tascii, i decided to use descriptive renderings
>> enclosed in angle brackets in the past:
>> 	\(sc	<sec>	SECTION SIGN
>> 	\(de	<deg>	DEGREE SIGN
>> 	\(ps	<par>	PILCROW SIGN
>> 	\(CS	<lub>	BLACK CLUB SUIT
>> Do you consider that desirable for cases like the above, too?

> Indeed, I think this is a sensible and readable way to go for -Tascii,
> particularly for characters likely to be used in eqn(7).

Following that, my inquiry on <> already elicited
positive feedback from Werner Lemberg.  So i'm quite hopeful
that we can get this done and make eqn(7) useful for your
intended purpose.

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      reply	other threads:[~2017-06-20 16:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-19  0:04 Anthony J. Bentley
2017-06-19 17:06 ` Ingo Schwarze
2017-06-20  4:27   ` Anthony J. Bentley
2017-06-20 16:44     ` Ingo Schwarze [this message]

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