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A general description is here.
‘cairo_ps(onefile = TRUE)’ generates encapsulated EPS on platforms with cairo >= 1.6.
Warnings are issued when non-portable filenames are found for graphics files (and chunks if ‘split = TRUE’). Portable names are regarded as alphanumeric plus hyphen, underscore, plus and hash (periods cause problems with recognizing file extensions).
Reading (e.g. with ‘readBin()’) from a raw connection was not advancing the pointer, so successive reads would read the same value. (Spotted by Bill Dunlap.)
‘c()’, ‘unlist()’, ‘cbind()’ and ‘rbind()’ could silently overflow the maximum vector length and cause a segfault. PR#14571