Determine whether to show progress spinner
By default, readxl displays a progress spinner unless
one of the following is TRUE:
 The spinner is explicitly disabled by setting
options(readxl.show_progress = FALSE).
 The code is run in a non-interactive session (interactive() is FALSE).
The code is run by knitr / rmarkdown.
The code is run in an RStudio notebook chunk. readxl uses the progress package under-the-hood and therefore is also sensitive to any options that it consults.
readxl_progress()
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