[Rd] PDF generation issue from manual page

Korpela Mikko (MML) m|kko@korpe|@ @end|ng |rom m@@nm|tt@u@|@|to@@||
Wed Feb 12 10:23:09 CET 2020

Hi Neonira!

The \blacktriangleright macro is defined in LaTeX package "amssymb". According to Writing R Extensions (section 2.6 Mathematics), "only basic LaTeX can be used, there being no provision to specify LaTeX style files such as the AMS extensions" (in Rd files).

- Mikko
-----Alkuperäinen viesti-----
Lähettäjä: R-devel <r-devel-bounces using r-project.org> Puolesta neonira Arinoem
Lähetetty: tiistai 11. helmikuuta 2020 15.57
Vastaanottaja: r-devel <r-devel using r-project.org>
Aihe: [Rd] PDF generation issue from manual page

Hi R gurus

Got an issue risen by CRAN about using unknown characters from Latex.

Here is the error message

*Check: PDF version of manual, Result: WARNING   LaTeX errors when creating
PDF version.   This typically indicates Rd problems.   LaTeX errors found:
  ! Undefined control sequence.   <recently read> \blacktriangleright *

*   l.237 STRATUM $\blacktriangleright
$ LAYER\_3   ! Undefined control sequence.   <recently read>
\blacktriangleright *

*   l.239 PHASING $\blacktriangleright
$ RUN   ! Undefined control sequence.   <recently read> \blacktriangleright

*   l.241 INTENT  $\blacktriangleright

I understand that the \blacktriangleright is an unknown control sequence from latex ... and that sounds strange to me, as I uses it often in vignettes without any issue so far.

In the incriminated manual page, the code generating this sequence is the following

I am wondering what is wrong and how to circumvent such issue.
Yours ideas and hints welcome


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