[Octave-bug-tracker] [bug #57045] Missing matlab function: contains

[Marshall]

Follow-up Comment #2, bug #57045 (project octave):

The function here doesn't work in the cases as specified by matlab. The
following are examples taken from Matlab help/documentation


    STR = 'data.tar.gz';
    P = 'tar';
    assert(contains(STR,P),true)

    chr = 'peppers, onions, and mushrooms';
    assert(contains(chr,'onion'),true);
    assert(contains(chr,'pineapples'),false);

    STR = {'abstracts.docx','data.tar.gz'};
    P = 'tar';         
    assert(contains(STR,P),logical([0 1]))

    STR = 'data.tar.gz';
    P = {'docx','tar'};
    assert(contains(STR,P),true)

    str = {'Mary Ann Jones','Christopher Matthew Burns','John Paul Smith'};
    pattern = {'Ann','Paul'};
    assert(contains(str,pattern),logical([1 0 1]))
    assert(str(contains(str,pattern)),{'Mary Ann Jones','John Paul Smith'})

    STR ={'DATA.TAR.GZ','SUMMARY.PPT'};
    P = 'tar';
    assert(contains(STR,P,'IgnoreCase',true),logical([1 0]))

The code submitted here passes the first two cases, but not the third or
later. The third assertion should be a fundamental test that is not passed,
whereas the later assertions are 'advanced' features in order of what I think
is important (I use the fourth case frequently, but none of the later cases).

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