* etags.c (get_lang_from_name, get_lang_from_interpreter,
get_lang_from_suffix): New functions. (get_language): Function deleted. (lang_entry): Two members added to struct. (lang_names): Reflect the new layout of lang_entry. (print_language_names, main, find_entries): Use the new functions. (find_entries): Look at the first line for #! if no language. (C_entries): Invalidate the token when funcdef is reset. (Perl_functions): New function. (lang_suffixes): .pl and .pm are Perl suffixes.
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