Can't parse even simple grammar

[konceptosociala]

Describe the bug
Parsing multiple line comments doesn't work

To Reproduce

1. Grammar: multiline_comment = { "/*" ~ (ANY)* ~ "*/" }
2. Any comment like
   /* abc123 */
   Or

/*
*
* multiline
*
*/

Expected behavior
It must be parsed, but there is an error

Error: Error { variant: ParsingError { positives: [multiline_comment], negatives: [] }, location: Pos(0), line_col: Pos((1, 1)), path: None, line: "/* sample multiline comment */", continued_line: None }

[tomtau]

How about this rule: https://github.com/pest-parser/pest/blob/master/meta/src/grammar.pest#L164 ?

multiline_comment  = { "/*" ~ (multiline_comment | !"*/" ~ ANY)* ~ "*/" }

[konceptosociala]

Thanks, it works, but could you pls explain, what is wrong with my variant?

[tomtau]

PEG's matching is greedy and unambiguous (it will just deterministically pick one parse tree), so in your rule, it will just keep matching on (ANY)* until the end, and then fail to match */.