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bda5b0f844
Implement backslash based escaping in the command parser and autocompletion logic to handle contact names containing double quotes. This stops the parser from splitting nicknames into multiple tokens, which previously caused "Invalid usage" errors. The parser now sees \ as an escape character for quotes and spaces in _parse_args_helper, count_tokens and get_start. Autocomplete results are escaped when they contain spaces, and search prefixes are unescaped before matching. strip_arg_quotes() has also been updated to handle unescaping. Fixes: https://github.com/profanity-im/profanity/issues/1844 Signed-off-by: Michael Vetter <jubalh@iodoru.org>