When same stringparam is defined on both the command line and within the DC file, build breaks

[ghost]

Problem description

• The DC file contains XSLTPARAM="--param show.edit.link=1".
• We use a command that defines the same parameter again: daps -d DC-RA-Ampere-SES --force -vv html --stringparam='show.edit.link=1'

xsltproc complains about the parameter having been defined already and refuses to cooperate:

runtime error
Global parameter show.edit.link already defined
runtime error
Global parameter show.edit.link already defined
Writing /data/gits/sbp/build/RA-Ampere-SES/html/RA-Ampere-SES/index.html for article
no result for /data/gits/sbp/build/.profiled/noprofile/RA-Ampere-SES.xml
make: *** [/usr/share/daps/make/html.mk:271: /data/gits/sbp/build/RA-Ampere-SES/html/RA-Ampere-SES/index.html] Error 9

Expected behavior

The (last defined) parameter from the command line should gain precedence and overwrite the other(s). Build should succeed.

References

• The libxslt source file that causes our headaches: https://gitlab.gnome.org/GNOME/libxslt/-/blob/master/libxslt/variables.c#L1329
• Python-AsciiDoc had to fix the same issue, in v. 8.6.3 in 2010: https://asciidoc.org/CHANGELOG.txt