2.15.1.2 Nested comments

SWI-Prolog allows for nesting /* ... */ comments. Where the ISO standard accepts /* ... /* ... */ as a comment, SWI-Prolog will search for a terminating */. This is useful if some code with /* ... */ comment statements in it should be commented out. This modification also avoids unintended commenting in the example below, where the closing */ of the first comment has been forgotten.^{28Recent copies of GCC give a style warning if /* is encountered in a comment, which suggests that this problem has been recognised more widely.}

/* comment

code

/* second comment */

code