11.10.1 Top new questions this week

11.10.1.1 What to do about rivers once detected?
11.10.1.2 Make Plain TeX file execute \bye unless it's \input to another file
11.10.1.3 Typeset the adA~..le symbol
11.10.1.4 Access Kurier upright calligraphic letters
11.10.1.5 Negative thin space causes error when using unicode-math
11.10.1.6 Unexpected difference with tracinglostchars, pdflatex vs lualatex
11.10.1.7 Unexpected roundoff with fpeval length comparison
11.10.1.1 What to do about rivers once detected?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736573

This question has a lovely example of a river: 
\documentclass{article} 
\usepackage{mathptmx} 
\usepackage{microtype} 
\textwidth 247pt 
\parindent 23pt 
\frenchspacing 
\begin{document} 
Though the ... 
[rivers]
 
asked by Gaussler https://tex.stackexchange.com/landing/r/digest?cta=user&id=19809 Score of 20
answered by Skillmon https://tex.stackexchange.com/landing/r/digest?cta=user&id=117050 Score of 30
11.10.1.2 Make Plain TeX file execute \bye unless it's \input to another file

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736598

I have two plain TeX files, file1.tex and file2.tex. I want file2.tex to execute a \bye statement if it's run standalone, but not if it's run as \input to file1.tex, i.e., 
file1.tex: 
file1 was entered.... 
[tex-core] [plain]
 
asked by Jonathan Levi https://tex.stackexchange.com/landing/r/digest?cta=user&id=232342 Score of 9
answered by rallg https://tex.stackexchange.com/landing/r/digest?cta=user&id=358219 Score of 12
11.10.1.3 Typeset the adA~..le symbol

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736931

I want to make the symbol for the restricted product of a family of topological spaces. In different books it is expressed as: 
I tried with: 
\documentclass{article} 
\usepackage{mathtools} 
\begin{... 
[symbols] [overlays]
 
asked by Radagast https://tex.stackexchange.com/landing/r/digest?cta=user&id=374241 Score of 7
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 5
11.10.1.4 Access Kurier upright calligraphic letters

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736726

Is there an easier way to access Kurier's upright calligraphic letters than entering their unicode value? 
\documentclass[11pt,a4paper]{scrartcl} 
\usepackage[math]{kurier} 
\usepackage{fontspec} 
\... 
[fonts] [fontspec] [math-fonts] [mathcal] [calligraphy]
 
asked by Xorios https://tex.stackexchange.com/landing/r/digest?cta=user&id=263552 Score of 7
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 5
11.10.1.5 Negative thin space causes error when using unicode-math

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736635

I want to use a relation symbol that is a heart suit composed with a slash. In my prior work, I could accomplish it with \mathrel{\not\!\heartsuit}. The negative thin space \! is needed to make the ... 
[spacing] [unicode-math]
 
asked by Matthew Leingang https://tex.stackexchange.com/landing/r/digest?cta=user&id=1402 Score of 7
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 7
11.10.1.6 Unexpected difference with tracinglostchars, pdflatex vs lualatex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736811

TeXLive 2024, Linux. Here is the MWE. Compile (command line) with pdflatex and lualatex, to see the difference in behavior: 
\documentclass{article} 
% Using default font Latin Modern Roman at 10pt. 
% ... 
[luatex] [characters]
 
asked by rallg https://tex.stackexchange.com/landing/r/digest?cta=user&id=358219 Score of 6
answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 6
11.10.1.7 Unexpected roundoff with fpeval length comparison

https://tex.stackexchange.com/landing/r/digest?cta=question&id=736510

This MWE shows it all. Same with pdflatex or lualatex: 
\documentclass{article} 
\newlength\mytemplength 
\setlength\mytemplength{8.5in} 
\newlength\myotherlength 
\setlength\myotherlength{8.5in} 
\edef\... 
[fpeval]
 
asked by rallg https://tex.stackexchange.com/landing/r/digest?cta=user&id=358219 Score of 6
answered by jlab https://tex.stackexchange.com/landing/r/digest?cta=user&id=316068 Score of 6