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is_bm_font() returns TRUE for bm_font objects (or subclasses) and FALSE for all other objects.
is_bm_font()
TRUE
bm_font
FALSE
is_bm_font(x)
TRUE or FALSE
An object
bm_font()
font_file <- system.file("fonts/spleen/spleen-8x16.hex.gz", package = "bittermelon") font <- read_hex(font_file) is_bm_font(font)
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