Trim character strings to specified display widths.
a character vector, or an object which can be coerced to a
character vector by
Positive integer values: recycled to the length of
‘Width’ is interpreted as the display width in a monospaced font. What happens with non-printable characters (such as backspace, tab) is implementation-dependent and may depend on the locale (e.g., they may be included in the count or they may be omitted).
Using this function rather than
substr is important when
there might be double-width (e.g., Chinese/Japanese/Korean) characters
in the character vector.
A character vector of the same length and with the same attributes
x (after possible coercion).
Elements of the result will have the encoding declared as that of
the current locale (see
Encoding) if the corresponding
input had a declared encoding and the current locale is either Latin-1
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