Re: reader: clarify variable names

[Akim Demaille]

I am currently preparing the NEWS file for Bison 3.4, so I'm reading
`git log` to see if there are missing things, and I just noticed this:

> Le 24 mars 2019 à 18:46, Akim Demaille <address@hidden> a écrit :
> 
> commit ae91c3cce389cafc5d607ec777181ce7e44397ff
> Author: Akim Demaille <address@hidden>
> Date:   Sat Mar 23 08:07:13 2019 +0100
> 
>    reader: clarify variable names
> 
>    * src/reader.c (grammar_rule_check_and_complete): When 'p' and 'lhs'
>    are aliases, prefer the latter, for clarity and consistency.
>    (grammar_current_rule_begin): Avoid 'p', current_rule suffices.
>    * src/gram.h, src/gram.c: Comment changes.
> 
>    ptdr#   calc.tab.c

This last bit is courtesy from Prior, my youngest son, who took
my keyboard at some point when I was looking elsewhere to write
"PTDR" in the middle of the (long) section of comments in the git
commit message under my editor.  I did not see that when I saved
the commit message.

For the records, "PTDR" stands for "Pété de rire" which is ROFLy
equivalent to ROTFL in French.

He's now on the country side, running before an infuriated Bison,
begging for mercy.

But then again, I'm looking elsewhere.

ptdr.