This function blanks out all non-text in an Rd file, for spell checking or other uses.
RdTextFilter(ifile, encoding = "unknown", keepSpacing = TRUE,
drop = character(), keep = character(),
macros = file.path(R.home("share"), "Rd", "macros", "system.Rd"))An input file specified as a filename or connection, or an "Rd" object
from parse_Rd.
An encoding name to pass to parse_Rd.
Whether to try to leave the text in the same lines and columns as in the original file.
Additional sections of the Rd to drop.
Sections of the Rd file to keep.
Macro definitions to assume when parsing. See parse_Rd.
A character vector which if written to a file, one element per line, would duplicate the text elements of the original Rd file.
This function parses the Rd file, then walks through it, element by
element. Items with tag "TEXT" are kept in the same position as
they appeared in the original file, while other parts of the file are
replaced with blanks, so a spell checker such as aspell
can check only the text and report the position in the original file.
(If keepSpacing is FALSE, blank filling will not occur,
and text will not be output in its original location.)
By default, the tags \S3method, \S4method,
\command, \docType, \email, \encoding,
\file, \keyword, \link, \linkS4class,
\method, \pkg, and \var are skipped. Additional
tags can be skipped by listing them in the drop argument;
listing tags in the keep argument will stop them from being
skipped. It is also possible to keep any of the
c("RCODE", "COMMENT", "VERB") tags, which correspond to R-like
code, comments, and verbatim text respectively, or to drop
"TEXT".
aspell, for which this is an acceptable filter.