By the way, \mathbb{R}^{*[*0,\infty)} breaks the indentation too on emacs 25. It's the probabilists notation... With \mathopen and \mathclose, it's fixed : \mathbb{R}^{\mathopen{[}0,\infty\mathclose{)}} How do pass to emacs26, apt-get install emacs26 answers 'not found' ? Le sam. 30 mars 2019 à 19:31, Thomas Bucaioni a écrit : > Hello, > Someone found a fix on StackExchange : > https://emacs.stackexchange.com/questions/48553/indentation-broken-with-all-inputfiles-tex > > Le mer. 27 mars 2019 à 13:27, Glenn Morris a écrit : > >> Thomas Bucaioni wrote: >> >> > When pressing the TAB key, the indentation doesn't happen. Even, the >> > text is translated as in a Word or LibreOffice document. >> >> Please give a minimal complete example starting from emacs -Q. >> >> > In GNU Emacs 24.5.1 (i686-pc-linux-gnu, GTK+ Version 3.22.11) >> >> Please try the current release (26.1 at time of writing). >> >