[groff] a5 paper size?

[Richard Morse]

Hi! I apologize if this is the wrong list for this question; if there is a 
better place to ask it, please let me know.

It seems from the manual* that I should be able to create an A5-sized PDF by 
doing something like:

    \X'papersize=a5'
    .pl 8.26i
    This is a test

and then calling

    groff -Tpdf foo.tr > foo.pdf

However, when I try this, I get the errors:

    Use of uninitialized value $val in pattern match (m//) at 
/usr/local/Cellar/groff/1.22.3/bin/gropdf line 1158, <> line 15.
    Use of uninitialized value $mediabox[3] in subtraction (-) at 
/usr/local/Cellar/groff/1.22.3/bin/gropdf line 1858, <> line 16.
    Use of uninitialized value $fld in concatenation (.) or string at 
/usr/local/Cellar/groff/1.22.3/bin/gropdf line 1923, <> line 26.

(This happens regardless of whether I say "a5" or "A5".) What am I doing wrong?

Thanks,
Ricky

* `man gropdf` says that the "\X'papersize=paper-size'" parameter is supported, and is the same as the 
"papersize" command, and directs me to `man groff_font`. `man groff_font` says that "papersize" 
selects a paper size: "Valid values for string are the ISO paper types A0-A7 ... Case is not significant for 
string if it holds predefined paper sizes."