pdfcomment within command swallowing last character of argument

Question

Hey fellow TeXnicians,
I've been having some trouble integrating pdfcomment with a custom command that I've written. No matter how simple the command, it seems that pdfcomment swallows the last character of the arguments I pass to it. A minimal reproduction case would include something like this in its preamble:

\newcommand{\todoComment}[1]{\pdfmarkupcomment[markup=Highlight]{#1}{#1}}

...and something like this in its body...

\todoComment{gradual}

...and produce output something like this:

Invoking \pdfmarkupcomment normally in the body text does not create a similar problem.

The only thing I've found that causes the final character of the passed-in string to render is leaving a full space after #1---wrapping the argument in braces causes LaTeX to throw an error, and adding \xspace is ineffectual. As solutions go it's not the worst, and I can certainly live with it. But I'd be curious to know whether anyone has insight into what-all's going on. I've been using LaTeX for years, but this one's got me pretty much stumped.

Thanks in advance for your thoughts!

Answer 1

Using this MWE,

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage{bera}
\usepackage{pdfcomment}
\newcommand{\todoComment}[1]{\pdfmarkupcomment[markup=Highlight]{#1}{#1}}
\pdfminorversion=3
\begin{document}
\todoComment{gradual}

\pdfmarkupcomment[markup=Highlight]{gradual}{gradual}
\end{document}

I get the following result:

In mwe.pdf you will find:

3 0 obj
<<
/Type /Annot
/Subtype /Highlight /C [0 0 1] /CreationDate (D:20161115180801+0000) /M (D:20161115180801+0000) /CA 1.0 /T () /Subj () /Contents (gradual) /Open false /QuadPoints [148.71194 664.93233 183.80598 664.93233 148.71194 654.18423 183.80598 654.18423] /F 4 
/Rect [148.712 657.235 148.712 657.235]
>>
endobj
4 0 obj
<<
/Type /Annot
/Subtype /Highlight /C [0 0 1] /CreationDate (D:20161115180801+0000) /M (D:20161115180801+0000) /CA 1.0 /T () /Subj () /Contents (gradual) /Open false /QuadPoints [148.71194 652.3794 183.80598 652.3794 148.71194 641.6313 183.80598 641.6313] /F 4 
/Rect [148.712 644.682 148.712 644.682]
>>
endobj

There's definitively gradual as PDF annotation content! Besides the positions, both methods produce the same code. So, probably a problem with your PDF viewer! I'm using Win10/AR!