Comments within \pgfplotstableread{...} lead to error

Question

I use the \pgfplotstableread{} command of the pgfplotstable package and manually type in a table.

\documentclass{article}
\usepackage{pgfplotstable}

\begin{document}

\pgfplotstableread{
  Col1  Col2
  p0    Text0
  p1    Text1%blabla
  p2    Text2
  p3    Text3
}\mytable

\end{document}

There seems to be a bug with comments at the end of rows. With the provided example, I am getting the following error:

Package pgfplots Error: Table '<inline_table>' appears to have too many columns in line 3: Ignoring 'Text2'. PGFPlots found that the number of columns is larger than the previously determined number of columns. Please verify that every cell entry is separated correctly (use braces {} if necessary. Also verify that column names are plain ASCII.). This error is not critical.

I am not sure what's going on but when I remove %blabla, the document compiles just fine. Until now, I thought that comments at the end of lines were "invisible" in Latex.

Answer 1

The manual says that [row sep=newline] is fragile, even though it is the default. You can start a line with % and the whole line is ignored.

\documentclass{article}
\usepackage{pgfplotstable}

\begin{document}

\pgfplotstableread[every column/.style={string type},row sep=\\]{
  Col1  Col2\\
  p0    Text0\\
  p1    Text1\\%blable
  p2    Text2\\
  p3    Text3\\
}\mytable

\pgfplotstabletypeset[every column/.style={string type}]{\mytable}

\end{document}