Demonstrate and extend printf truncation #26
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The upstream printf code already has support for string truncation. This commit demonstrates/tests it via unit tests.
This should have been done when format.go moved to a new package.
(Using the refresh.sh script)
When the flag `!` is passed in combination with a
precision (e.g. `%!.3v`), the truncation code now adds an
ellipsis (`…`) if truncation has actually occurred.
For example:
`printf("%!.3s", "hel")` -> `‹hel›`
`printf("%!.3s", "hello")` -> `‹hel…›`
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See the individual commits for details.
Supersedes #25
Also a new feature:
When the flag
!is passed in combination with aprecision (e.g.
%!.3v), the truncation code now adds anellipsis (
…) if truncation has actually occurred.For example:
printf("%!.3s", "hel")->‹hel›printf("%!.3s", "hello")->‹hel…›This change is