Clarify batch file ERROR: message

Adding the name of the file which couldn't be read & a brief description of the option.

Just "ERROR: batch file could not be read" can be confusing for users who are inexperienced (and likely using Windows).

eg. https://www.reddit.com/r/Piracy/comments/cfl0ap/youtubedl_error_batch_file_could_not_be_read_how/
(The user specified option -audio-file, instead of --audio-file)
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cantandwont 2019-07-28 15:27:24 +10:00 committed by GitHub
parent 90634acfcf
commit 8297acceb0
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@ -94,7 +94,7 @@ def _real_main(argv=None):
if opts.verbose:
write_string('[debug] Batch file urls: ' + repr(batch_urls) + '\n')
except IOError:
sys.exit('ERROR: batch file could not be read')
sys.exit('ERROR: Batch URL file %r could not be read\t(-a, --batch-file FILE) [File containing URLs to download]' % opts.batchfile)
all_urls = batch_urls + [url.strip() for url in args] # batch_urls are already striped in read_batch_urls
_enc = preferredencoding()
all_urls = [url.decode(_enc, 'ignore') if isinstance(url, bytes) else url for url in all_urls]