INPUT_FILE_ENCODING Format Error

[paule32]

I am using doxygen 1.10.0. When running doxygen I get the error:
"error: Illegal format for option INPUT_FILE_ENCODING, no equal sign ('=') specified for item 'utf-8' "

when I want to set INPUT_FILE_ENCODING to utf-8:
INPUT_FILE_ENCODING = utf-8 # or:
INPUT_FILE_ENCODING = "utf-8"

[albert-github]

In the documentation (see https://www.doxygen.nl/manual/config.html#cfg_input_file_encoding)) it is stated:

INPUT_FILE_ENCODING

This tag can be used to specify the character encoding of the source files that doxygen parses The INPUT_FILE_ENCODING tag can be used to specify character encoding on a per file pattern basis. Doxygen will compare the file name with each pattern and apply the encoding instead of the default INPUT_ENCODING) if there is a match. The character encodings are a list of the form: pattern=encoding (like *.php=ISO-8859-1).

See INPUT_ENCODING for further information on supported encodings.

The important part here for you would probably be:

The character encodings are a list of the form: pattern=encoding (like *.php=ISO-8859-1).