10.42.3 Can you answer these questions?

10.42.3.1 REVTeX4-2: Strange behavior of year for specific journal

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721053

I have noticed that when citing JHEP using the journal abbreviation "J. High Energy. Phys." with the REVTeX4-2 document class the year is suppressed and replaced with the issue number, which ... 
[bibliographies] [citing] [revtex]
 

asked by Kai https://tex.stackexchange.com/landing/r/digest?cta=user&id=157075 Score of 1

10.42.3.2 ! Missing $ inserted when compliling the index with nomenclature

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721258

when I'm trying to compile the nomenclature, the compiler gives me the following error: 
! Missing $ inserted. 
$ 
l.4 -- Unknown specifier lethead_ 
prefix. 
this is the smallest functional code that I'm ... 
[nomenclature] [nomencl]
                                                                                  

                                                                                  
 

asked by user16320 https://tex.stackexchange.com/landing/r/digest?cta=user&id=16320 Score of 1

10.42.3.3 \begin listing  environment taking full page width when used inside of \begin itemize  environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721187

I am using \begin{listing} environment inside of \begin{itemize} environment. But the listing output is taking full page width instead of the itemize environment width. 
Here is the complete example: 
... 
[listings] [itemize] [textwidth]
 

asked by AKASH YADAV https://tex.stackexchange.com/landing/r/digest?cta=user&id=325009 Score of 1