ziffer – Conversion of punctuation in maths mode

The pack­age mod­i­fies the be­haviour of char­ac­ters in maths mode so that: ‘.’ is used as a one-thou­sand sep­a­ra­tor (as is com­mon in Ger­many) ‘,’ is used as a dec­i­mal sep­a­ra­tor (as is com­mon in Ger­many) ‘--’ is rep­re­sented with spac­ing as ap­pro­pri­ate to such con­structs as ‘1.000,--’.
Th­ese con­ver­sions may be switched on and off.