Force leading spaces in \if result

Asked May 20 '15 at 20:28

Active May 21 '15 at 06:30

Viewed 31 times

\def\test#1{
\def\csv{#1}
\ifx\csv\empty
\else
X\fi
}


\starttext

This is a test x\test{1}x.

\stoptext

Should result in xXx, but shows x Xx. How do I avoid the leading space here?

Edit: Ok, this has been resolved, but what if I need one or more leading spaces before the Xsuch as x Xx. Using this doesn't help:

\def\test#1{%
\def\csv{#1}%
\ifx\csv\empty%
\else%
    X\fi%
}%

edited May 21 '15 at 06:30

asked May 20 '15 at 20:28

3

Add % at the end of the lines. – percusse May 20 '15 at 20:31
Wicked @percusse. Why is a % here? Thanks! – Singulaere Entitaet May 20 '15 at 20:35
2

your \test macro has two (not "single") space tokens in the first two lines – David Carlisle May 20 '15 at 20:35
3

see http://tex.stackexchange.com/questions/7453/what-is-the-use-of-percent-signs-at-the-end-of-lines – David Carlisle May 20 '15 at 20:36

0 Answers0