Why \read adds extra space to the end of content?

Asked Oct 23 '22 at 15:45

Active Oct 23 '22 at 15:45

Viewed 21 times

I have file foo.txt with a single byte inside: x. Here is my code:

\documentclass{article}
\begin{document}
\newread\foo
\immediate\openin\foo=foo.txt
\read\foo to \content
\immediate\closein\foo
\message{content: [\content]^^J}%
\end{document}

It prints in the log:

content: [x ]

Why this extra space after x? How to get rid of it?

asked Oct 23 '22 at 15:45

yegor256

12,021

1

you have also a line end in the file. Either use x% in the file, or set \endlinechar locally to -1 when reading. – Ulrike Fischer Oct 23 '22 at 15:57
@UlrikeFischer can you please provide full example with \endlinechar and I will be glad to accept it – yegor256 Oct 23 '22 at 15:58
1

see https://tex.stackexchange.com/questions/74008/how-to-trim-the-end-of-line-character-for-each-line-read-from-an-external-file – Ulrike Fischer Oct 23 '22 at 16:00

Why \read adds extra space to the end of content?

0 Answers0