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## Re: [help-texinfo] Mathematical Fractions

**From**: |
Gavin Smith |

**Subject**: |
Re: [help-texinfo] Mathematical Fractions |

**Date**: |
Wed, 15 Feb 2017 19:03:36 +0000 |

On 14 February 2017 at 19:17, Gavin Smith <address@hidden> wrote:
>* except for a warning "warning: @iftex should only appear at the*
>* beginning of a line (possibly involving @Frac)" that you may get with*
>* texi2any.*
Of course, another option is to interchange the macro and conditional:
@iftex
@macro Frac{a,b}
@math{\a\ \\over \b\}
@end macro
@end iftex
@ifnottex
@macro Frac{a,b}
\a\ / \b\
@end macro
@end ifnottex
c divided by d is written as @Frac{c,d}.