Check cross-references

Check cross-references that are repetitive or (in the case of cleveref and varioref) incorrect case.

check_xrefs(filename, permitted.case = c(NA, "upper", "lower"),
  .report_error)

Arguments

filename	A LaTeX file
permitted.case	One of NA, "upper", "lower". If NA, the default, both \Cref and \cref are permitted, but not in the same document. If upper, only \Cref is permitted; if lower, only \cref. If NULL, the case is not checked at all.
.report_error	The function to provide context to the error.