11.18.3 Can you answer these questions?

11.18.3.1 Bibliography filter: Argument of \ifblank has an extra

https://tex.stackexchange.com/landing/r/digest?cta=question&id=739043

I was trying to do a really simple thing, filtering bibliography by year, it didn't work, so i tried by keyword, still an error with \defbibfiler. I work in Overleaf, use luaLaTex, specified biber ... 
[biblatex] [bibliographies] [biber]
 

asked by fruit_alchemist https://tex.stackexchange.com/landing/r/digest?cta=user&id=376113 Score of 1

answered by Marijn https://tex.stackexchange.com/landing/r/digest?cta=user&id=89417 Score of 0

11.18.3.2 Can I further normalise output in comparison logs for l3build?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=739032

I am trying to write a test to check the information chronos packages provide about themselves. The packages all use svn-prov. My .lvt is effectively 
\RequirePackage{svn-prov} 
\ProvidesFileSVN{$Id: ... 
[package-writing] [logging] [revision-control] [l3build] [subversion]
 

asked by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 2

11.18.3.3 How to Remove Extra Spaces in Beamer Frame with Equations and Itemize?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=739057

I am creating a Beamer presentation and encountering extra vertical and horizontal spaces in my frame, particularly around equations and within the itemize environment. I want to tighten the layout to ... 
[beamer] [spacing]
 

asked by Student https://tex.stackexchange.com/landing/r/digest?cta=user&id=141229 Score of 1

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 0