Minor Description
That parameter was introduced in TIKA-3516 to avoid undesired charsets in advance, but it is not working as expected, it is returning when first ignored charset is found, when it should continue to next charsets. Attached (corrupted) file used to be detected as windows-1252 by Tika-1.x, but now is being detected as IBM420 after TIKA-3516, ignoreCharsets param should be able to ignore IBM420. I'll push a fix shortly.