html/template: add tests from text/template

Copy and adapt tests from text/template, to exercise more of html/template's copy.

Various differences in behavior are flagged with NOTE comments or t.Skip
and documented in #40075. Many of them are probably bugs.
One clarifying test case added to both text/template and html/template.

No changes to the package itself.

Change-Id: Ifefad83d647db846040d24c2741a0244b00ade82
Run-TryBot: Russ Cox <>
TryBot-Result: Gobot Gobot <>
Reviewed-by: Rob Pike <>
10 files changed
tree: 4007ee6438314a4bb1fef4a87ec8c2cc0a791b66
  1. .gitattributes
  2. .github/
  3. .gitignore
  11. api/
  12. doc/
  13. favicon.ico
  14. lib/
  15. misc/
  16. robots.txt
  17. src/
  18. test/

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