Zap source references
There are a number of situations where R creates source references:
Reading R code from a file with source() and parse() might save
source references inside calls to function and {.
sys.call() includes a source reference if possible.
Creating a closure stores the source reference from the call to
function, if any.
These source references take up space and might cause a number of
issues. zap_srcref() recursively walks through expressions and
functions to remove all source references.
zap_srcref(x)
x |
An R object. Functions and calls are walked recursively. |
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