texinfo: @allowcodebreaks

Breaks

@w

@- @hyphenation

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15.4 '@allowcodebreaks': Control Line Breaks in '@code'
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Ordinarily, TeX considers breaking lines at '-' and '_' characters
within '@code' and related commands (Note: @code), more or less as if
they were "empty" hyphenation points.

  This is necessary since many manuals, especially for Lisp-family
languages, must document very long identifiers.  On the other hand, some
manuals don't have this problems, and you may not wish to allow a line
break at the underscore in, for example, 'SIZE_MAX', or even worse,
after any of the four underscores in '__typeof__'.

  So Texinfo provides this command:

     @allowcodebreaks false

to prevent from breaking at '-' or '_' within '@code'.  You can go back
to allowing such breaks with '@allowcodebreaks true'.  Write these
commands on lines by themselves.

  These commands can be given anywhere in the document.  For example,
you may have just one problematic paragraph where you need to turn off
the breaks, but want them in general, or vice versa.

  This command has no effect except in HTML and TeX output.