Merge "Update fontchain_lint to print all coverage errors, not just first."

def check_emoji_font_coverage(emoji_font, all_emoji, equivalent_emoji):

    coverage = get_emoji_map(emoji_font)

    errors = []

    for sequence in all_emoji:

        assert sequence in coverage, (

            '%s is not supported in the emoji font.' % printable(sequence))

        if not sequence in coverage:

          errors.append('%s is not supported in the emoji font.' % printable(sequence))

    for sequence in coverage:

        if sequence in {0x0000, 0x000D, 0x0020}:

            # The font needs to support a few extra characters, which is OK

            continue

        assert sequence in all_emoji, (

            'Emoji font should not support %s.' % printable(sequence))

        if sequence not in all_emoji:

          errors.append('%s support unexpected in the emoji font.' % printable(sequence))

    for first, second in equivalent_emoji.items():

        assert coverage[first] == coverage[second], (

            '%s and %s should map to the same glyph.' % (

        if first not in coverage or second not in coverage:

            continue  # sequence will be reported missing

        if coverage[first] != coverage[second]:

            errors.append('%s and %s should map to the same glyph.' % (

                printable(first),

                printable(second)))

                while equivalent_seq in equivalent_emoji:

                    equivalent_seq = equivalent_emoji[equivalent_seq]

                equivalent_seqs.add(equivalent_seq)

            assert len(equivalent_seqs) == 1, (

                'The sequences %s should not result in the same glyph %s' % (

            if len(equivalent_seqs) != 1:

                errors.append('The sequences %s should not result in the same glyph %s' % (

                    printable(equivalent_seqs),

                    glyph))

    assert not errors, '%d emoji font errors:\n%s\n%d emoji font coverage errors' % (len(errors), '\n'.join(errors), len(errors))

def check_emoji_defaults(default_emoji):

    missing_text_chars = _emoji_properties['Emoji'] - default_emoji