Re: styling a replacement

On Sun, Feb 28, 2016 at 5:00 PM, Tom Roche <[email protected]> wrote:
>
> [footnotes follow .sig]
>
> Can one style a non-link replacement (e.g., emphasize text with a subscript) without a `raw` directive? What I mean:

What you're asking for is nested inline markup via substitution, and
that is not currently possible, no.

Suggestion: rather than a substitution, use the Unicode subscript
characters, e.g. CO₂, FFCO₂, H₂O. Superscripts too: E=mc². These can
be styled with emphasis: *CO₂*, **FFCO₂**, etc. For easy character
entry, explore the "compose key" functionality
(https://en.wikipedia.org/wiki/Compose_key) standard in Linux distros
and easily added to MacOS & Windows systems.

David Goodger
<http://python.net/~goodger>


> I see FAQ section 2.16[1]:
>> Inline markup can be combined with hyperlinks using substitution definitions and references with the "replace" directive. For example:
>
> However I want to combine inline markup and a substitution providing a subscript, for something like the following reST:
>
> fail1> Cities produce more than 70% of global fossil-fuel |CO2| emissions (*|FFCO2|*). We have cutting-edge science relating how cities and regions settle and use their land (LULC) to their |FFCO2| emissions.
>
> fail1> .. |CO2| replace:: CO\ :sub:`2`
> fail1> .. |FFCO2| replace:: FFCO\ :sub:`2`
>
> to show (when rendered, e.g., by `restview`) "FFCO2"
>
> * the first time in italic, the second time not
> * both times with '2' subscripted
> * neither times with the '|' showing
>
> The above fragment fails, as
>
> - only the second "FFCO2" is subscripted
> - the first "FFCO2" both shows the pipes and does not subscript
>
> I also tried
>
> fail2> Cities produce more than 70% of global fossil-fuel |CO2| emissions (|iFFCO2|). We have cutting-edge science relating how cities and regions settle and use their land (LULC) to their FFCO2 emissions.
>
> fail2> .. |CO2| replace:: CO\ :sub:`2`
> fail2> .. |FFCO2| replace:: FFCO\ :sub:`2`
> fail2> .. |iFFCO2| replace:: *|FFCO2|*
>
> which produces identical (failed results). Thanks to FAQ section 2.16[1] I learned I could do the following, which works:
>
> works> Cities produce more than 70% of global fossil-fuel |CO2| emissions (|iFFCO2|). We have cutting-edge science relating how cities and regions settle and use their land (*LULC*) to their |FFCO2| emissions.
>
> works> .. |CO2| replace:: CO\ :sub:`2`
> works> .. |FFCO2| replace:: FFCO\ :sub:`2`
> works> .. |iFFCO2| raw:: html
> works>
> works>    <em>FFCO<sub>2</sub></em>
>
> but I'd prefer to do this (and similar simple styling of replacements) without `raw` directives. Is that currently possible?
>
> If possible please reply to me (directly) as well as the list, and
> TIA, Tom Roche <[email protected]>
>
> [1]: http://docutils.sourceforge.net/FAQ.html#is-nested-inline-markup-possible
>

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