has_ctl {fansi} | R Documentation |
has_ctl
checks for any Control Sequence, whereas has_sgr
checks only
for ANSI CSI SGR sequences. You can check for different types of sequences
with the which
parameter.
has_ctl(x, which = "all", warn = getOption("fansi.warn")) has_sgr(x, warn = getOption("fansi.warn"))
x |
a character vector or object that can be coerced to character. |
which |
character, what Control Sequences to check for; see |
warn |
TRUE (default) or FALSE, whether to warn when potentially
problematic Control Sequences are encountered. These could cause the
assumptions |
logical of same length as x
; NA values in x
result in NA values
in return
fansi for details on how Control Sequences are interpreted, particularly if you are getting unexpected results.