Hi all Please consider --8<---------------cut here---------------start------------->8---
\begin{definition}[homotopy relation on 1-simplices]\label{defn:1-simplex-htpy} \uses{defn:simplicial-set} A parallel pair of 1-sim\-plices $f,g$ in a simplicial set $X$ are \textbf{homotopic} if there exists a 2-simplex whose boundary takes either of the following forms\footnote{The symbol ``$=$'' is used in diagrams to denote a degenerate simplex or an identity arrow.} %\footnote{The symbol ``$\!\!\!\!\!\begin{tikzcd}[ampersand replacement=\&, sep=small] ~\arrow[r, equals] \& ~ \end{tikzcd}\!\!\!\!\!$'' is used in diagrams to denote a degenerate simplex or an identity arrow.} \begin{center} \begin{tikzcd}[row sep=small, column sep=small] & y \arrow[dr, equals] & && & x \arrow[dr, "f"] \\ x \arrow[ur, "f"] \arrow[rr, "g"'] & & y & & x \arrow[ur, equals] \arrow[rr, "g"'] & & y \end{tikzcd} \end{center} or if $f$ and $g$ are in the same equivalence class generated by this relation. \end{definition} --8<---------------cut here---------------end--------------->8--- running LaTeX-fill-environment results in formatting environment 41% I have to interrupt with C-g and obtain \begin{definition}[homotopy relation on 1-simplices]\label{defn:1-simplex-htpy} \uses{defn:simplicial-set} A parallel pair of 1-sim\-plices $f,g$ in a simplicial set $X$ are \textbf{homotopic} if there exists a 2-simplex whose boundary takes either of the following forms\footnote{The symbol ``$=$'' is used in diagrams to denote a degenerate simplex or an identity arrow.} % \footnote{The symbol % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % ``$\!\!\!\!\!\begin{tikzcd}[ampersand replacement=\&, sep=small] ~\arrow[r, equals] \& ~ \end{tikzcd}\!\!\!\!\!$'' is used in diagrams to denote a degenerate simplex or an identity arrow.} \begin{center} \begin{tikzcd}[row sep=small, column sep=small] & y \arrow[dr, equals] & && & x \arrow[dr, "f"] \\ x \arrow[ur, "f"] \arrow[rr, "g"'] & & y & & x \arrow[ur, equals] \arrow[rr, "g"'] & & y \end{tikzcd} \end{center} or if $f$ and $g$ are in the same equivalence class generated by this relation. \end{definition} It could have been much longer because I think emacs entered a infinite loop. Any ideas? Regards Uwe Brauer Emacs : GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.18.0, Xaw3d scroll bars) of 2024-09-03 Package: 14.0.6.2024-10-22_10:04:26 current state: ============== (setq window-system 'x LaTeX-version "2e" TeX-style-path '("/home/oub/emacs/site-lisp/packages/auctex-git/auctex/style" "auto" "style" "/home/oub/ALLES/emacs/site-lisp/auctex-private-style") TeX-auto-save t TeX-parse-self t TeX-master t TeX-command-list '(("TeX" "%(PDF)%(tex) %(file-line-error) %`%(extraopts) %S%(PDFout)%(mode)%' %(output-dir) %t" TeX-run-TeX nil (plain-tex-mode texinfo-mode ams-tex-mode) :help "Run plain TeX") ("LaTeX" "%`%l%(mode)%' %T" TeX-run-TeX nil (latex-mode doctex-mode) :help "Run LaTeX") ("Makeinfo" "makeinfo %(extraopts) %(o-dir) %t" TeX-run-compile nil (texinfo-mode) :help "Run Makeinfo with Info output") ("Makeinfo HTML" "makeinfo %(extraopts) %(o-dir) --html %t" TeX-run-compile nil (texinfo-mode) :help "Run Makeinfo with HTML output") ("AmSTeX" "amstex %(PDFout) %`%(extraopts) %S%(mode)%' %(output-dir) %t" TeX-run-TeX nil (ams-tex-mode) :help "Run AMSTeX") ("ConTeXt" "%(cntxcom) --once --texutil %(extraopts) %(execopts)%t" TeX-run-TeX nil (context-mode) :help "Run ConTeXt once") ("ConTeXt Full" "%(cntxcom) %(extraopts) %(execopts)%t" TeX-run-TeX nil (context-mode) :help "Run ConTeXt until completion") ("BibTeX" "bibtex %(O?aux)" TeX-run-BibTeX nil (plain-tex-mode latex-mode doctex-mode context-mode texinfo-mode ams-tex-mode) :help "Run BibTeX") ("Biber" "biber %(output-dir) %s" TeX-run-Biber nil (plain-tex-mode latex-mode doctex-mode texinfo-mode ams-tex-mode) :help "Run Biber") ("Texindex" "texindex %s.??" 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