Babel's \selectlanguage{} resets \frenchspacing

Question

I know that \frenchspacing is the way I ought to typeset documents today, but I happen to like the double spacing after periods. To enable them, I use \nonfrenchspacing. But if I use babel and issue a \setlanguage{} command, it resets frenchspacing again. Is there a way to set it once per document (and maybe language) so it doesn't get switched later on?

Answer 1

Latest releases provide some hooks which you can use for this purpose. If it applies only to a language or some of them, follow the procedure already explained:

\addto\extrasLANG{\nonfrenchspacing}

But if the setting applies to the whole document:

\AddBabelHook{nonfrench}{afterextras}{\nonfrenchspacing}

This line of code tells babel to execute \nonfrenchspacing after every \extrasLANG is executed.

Answer 2

The way how to add some declaration into a language setting is this (preferably in the preamble):

\addto\extrasLANG{\nonfrenchspacing}

where LANG is whatever you need: english, czech, ...

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The way how to enforce \nonfrenchspacing everywhere is:

\AtBeginDocument{
  \let\frenchspacing=\nonfrenchspacing
  \nonfrenchspacing
}