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              "match": "(?x)%\n                                        (\\d+\\$)?                             # field (argument #)\n                                        [#0\\- +']*                           # flags\n                                        [,;:_]?                              # separator character (AltiVec)\n                                        ((-?\\d+)|\\*(-?\\d+\\$)?)?              # minimum field width\n                                        (\\.((-?\\d+)|\\*(-?\\d+\\$)?)?)?         # precision\n                                        (hh|h|ll|l|j|t|z|q|L|vh|vl|v|hv|hl)? # length modifier\n                                        [bdiouxXhHDOUeEfFgGaACcSspnmt%]      # conversion type\n                                    ",
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