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Eliminate error message for missing CMAP table #25403
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CMAP tables are a component of fonts which map character codes to glyph indices used in the font. In cases where this is missing for a font that we attempt to load, there is not much gained by logging this. It's also a common source of false positive bug reports and bug reports with misleading symptoms in Flutter, such as flutter/flutter#78929 Instead of logging the error, simply suppress it, since it's not actionable by the user. CMAP Reference: https://docs.microsoft.com/en-us/typography/opentype/spec/cmap
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Can we test this somehow? Sort of "golden files" for logs that makes sure nothing unexpected is logged? It would also catch other kinds of regressions with logging... |
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Funny you should mention that... we don't currently have testing for logs to stdout by C++ code, but as of #25402, we will have the ability to capture Dart logs :) I'll give this some thought. |
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CMAP tables are a component of fonts which map character codes to glyph indices used in the font. In cases where this is missing for a font that we attempt to load, there is not much gained by logging this. It's also a common source of false positive bug reports and bug reports with misleading symptoms in Flutter, such as flutter/flutter#78929 Instead of logging the error, simply suppress it, since it's not actionable by the user. CMAP Reference: https://docs.microsoft.com/en-us/typography/opentype/spec/cmap
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CMAP tables are a component of fonts which map character codes to glyph
indices used in the font. In cases where this is missing/corrupt for a font
that we attempt to load, there is not much gained by logging this. It's also
a common source of false positive bug reports, or misleading log messages.
Instead of logging the error, simply suppress it, since it's not
actionable by the user.
No new test since this simply suppresses a log message but does
not affect logic otherwise.
CMAP Reference:
https://docs.microsoft.com/en-us/typography/opentype/spec/cmap
Fixes flutter/flutter#78929
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