Scrape options from a code block
Scrape options from a code block
scrape_opts( x, envir = list(), def = list(), all = TRUE, marker = "=", allow_multiple = FALSE, narrow = TRUE )
x | 
 data  | 
envir | 
 environment from   | 
def | 
 default values  | 
all | 
 return all options, even those that are not in   | 
marker | 
 assignment operator; used to locate lines with options  | 
allow_multiple | 
 if   | 
narrow | 
 logical; if   | 
list with elements x (the data without options) and named 
options  as specified in the block.
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