# no extra (xref)
ctags: Notice: No options will be read from files or environment
ctags: Notice: ignoring null tag in input.cst(line: 1, language: CTagsSelfTest)
# drop '0' extra (xref)
ctags: Notice: No options will be read from files or environment
ctags: Notice: ignoring null tag in input.cst(line: 1, language: CTagsSelfTest)
# drop '{nulltag}' extra (xref)
ctags: Notice: No options will be read from files or environment
ctags: Notice: ignoring null tag in input.cst(line: 1, language: CTagsSelfTest)
# with --extras=+0 ($fmt)
ctags: Notice: No options will be read from files or environment
ctags: Notice: ignoring null tag in input.cst(line: 1, language: CTagsSelfTest)
                 emitNullTag    2 input.cst        z
# with --extras=+{nulltag}' (xref)
ctags: Notice: No options will be read from files or environment
ctags: Notice: ignoring null tag in input.cst(line: 1, language: CTagsSelfTest)
                 emitNullTag    2 input.cst        z
