double quote at the end of help strings causes error in argparse version 2.2.1

[oliverdrechsel]

Running argparse 2.2.1 we encountered an error in one of our scripts. Scripts work fine with argparse 2.1.6.

Our old code fails with new argparse version.

parser$add_argument('--listlab', type='character', help='This is a helpstring,"Containing Quotes"')
args <- parser$parse_args()

Error in "argparse::parse_args_output(output)" : version requested:
  File "<stdin>", line 19
    parser.add_argument("""--listlab""", type=str, help="""This is a helpstring,,"Containing Quotes"""")
                                                                                                                                                                                                 ^
SyntaxError: EOL while scanning string literal
In addition: Warning message:
In if (grepl("^\\{|^\\[", output)) { :
  the condition has length > 1 and only the first element will be used

Need to add a "whitespace" in the end of the help string.

parser$add_argument('--listlab', type='character', help='This is a helpstring,"Containing Quotes" ')
args <- parser$parse_args()

It seems that the regular expression needs some attention beyond my regex skills....

cheers

[trevorld]

Looks like this was introduced in https://github.com/trevorld/r-argparse/commit/f22b70c46c33798c0703f30547fd99ea4eea0d1b (when I added support for description/epilogue with newlines). I guess I can detect if the last character is a " and if so either escape it or wrap with ''' instead of """...

[trevorld]

• Thanks for the bug report!
• A patched version is on CRAN now (may take a few days to reach the various mirrors and the various binaries to be build)