Avoid excessive interpolation in pari gphelp script. #40028
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Currently sage does not build if
SAGE_LOCAL
contains an@
sign. While admittedly not common, it should not cause failure.The offender is pari. pari itself compiles fine, but cypari calls
gphelp -raw Catalan
to see if everything works alright, and this fails.The reason is that
gphelp
is malformed, and can't find its data directory. Primarily, this is based on the following erroneous perl construct:which is found near the top of the
doc/gphelp.in
file.This goes obviously amiss if
@datadir@
contains an@
sign, because of the double quotes. AFAIK, the best perl-ish way to be robust to semi-crap that can be found in paths is to use a quoted here-doc, which is what this patch does.Also reported upstream https://pari.math.u-bordeaux.fr/cgi-bin/bugreport.cgi?bug=2621