character string containing a regular expression. This is used
by grep (see also) as the pattern argument.
where
if “anywhere” all levels/attributes of the instruments
will be searched. Otherwise, where can be used to specify in which
levels/attributes to look. (e.g. c("name", "description") would only
look for text in those 2 places.
Symbols
the character ids of instruments to be searched. All are
are searched by default.
ignore.case
passed to grep; if FALSE, the pattern
matching is case sensitive and if TRUE, case is ignored during
matching.
exclude
character vector of names of levels/attributes that should not
be searched.
...
other arguments to pass through to grep
Value
character vector of primary_ids of instruments that contain the
sought after text.