12.19.1 Top new questions this week

12.19.1.1 Count spaces in LaTeX
12.19.1.2 tikz, scaling widths of lines
12.19.1.3 Is there currently a way to use custom lists in slides with ltx-talk class?
12.19.1.4 Projective limit spanish acute accent
12.19.1.5 Automatically include -converted version of images in LaTeX if it exists
12.19.1.6 How should (0,-1) -- +([turn]45:2) be interpreted?
12.19.1.7 Drawing a Manifold in tikz
12.19.1.1 Count spaces in LaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760770

I would like to create a fast/optimized fully expandable function that counts the number of spaces in an argument: 
\documentclass{article} 
\begin{document} 
\countspaces{ A B } % Should return 3 (1 is ... 
[spacing] [expansion] [latex3] [programming]
 
asked by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=17200 Score of 13
answered by wipet https://tex.stackexchange.com/landing/r/digest?cta=user&id=51799 Score of 12
12.19.1.2 tikz, scaling widths of lines

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760959

It seems (or is apparently) that thickness of lines is hart coded. Consequently at driving of an line, the use for example scale=2 make line only longer and its thickens is not changes, see MWE below: 
... 
[tikz-pgf] [tikz-styles] [tikz-pic] [tikzscale]
 
asked by Zarko https://tex.stackexchange.com/landing/r/digest?cta=user&id=18189 Score of 10
answered by samcarter_is_at_topanswers.xyz https://tex.stackexchange.com/landing/r/digest?cta=user&id=36296 Score of 5
12.19.1.3 Is there currently a way to use custom lists in slides with ltx-talk class?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=761002

The ltx-talk class for slides defines its own basic lists, so that they can be used with overlays. I am interested in using custom lists, for example ones that pre-format dialogue. Doing this in the ... 
[lists] [enumitem] [ltx-talk]
                                                                                  

                                                                                  
 
asked by ChristopherE https://tex.stackexchange.com/landing/r/digest?cta=user&id=6622 Score of 9
answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 Score of 7
12.19.1.4 Projective limit spanish acute accent

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760968

I am using babel package with Spanish style (in amsart class), which puts acute accents in math symbols such as \lim, \max, \inf, etc. It is actually nice, because it keeps all the formatting in the ... 
[symbols] [babel] [accents] [spanish]
 
asked by Esteban Saldarriaga-Marin https://tex.stackexchange.com/landing/r/digest?cta=user&id=262169 Score of 9
answered by Marijn https://tex.stackexchange.com/landing/r/digest?cta=user&id=89417 Score of 6
12.19.1.5 Automatically include -converted version of images in LaTeX if it exists

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760850

I'm working on a LaTeX document where I have multiple image files, some of which have a -converted version. For example, my files might look like this: 
a.png 
b.png 
b-converted.png 
c.png 
c-converted.... 
[graphics]
 
asked by monty01 https://tex.stackexchange.com/landing/r/digest?cta=user&id=433835 Score of 9
answered by taiwan12 https://tex.stackexchange.com/landing/r/digest?cta=user&id=235794 Score of 9
12.19.1.6 How should (0,-1) -- +([turn]45:2) be interpreted?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760922

How should I interprete the case B? 
Case A 
\documentclass[tikz,border=12pt,12pt]{standalone} 
\begin{document} 
\begin{tikzpicture}[dot/.append style={circle,fill,inner sep=3pt}] 
\draw (-3,-3) grid (3,3)... 
[tikz-pgf]
 
asked by D G https://tex.stackexchange.com/landing/r/digest?cta=user&id=12187 Score of 8
answered by Rmano https://tex.stackexchange.com/landing/r/digest?cta=user&id=38080 Score of 5
12.19.1.7 Drawing a Manifold in tikz

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760774

I am trying to draw a manifold using tikz. The best way I can think of is to give several points and generates smooth lines connecting those points. Here is my draft: 
\documentclass{article} 
\... 
[tikz-pgf]
 
asked by Hassium https://tex.stackexchange.com/landing/r/digest?cta=user&id=361928 Score of 8
answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 13