Dylan DPC d223250662
Rollup merge of #81860 - osa1:issue81800, r=estebank
Fix SourceMap::start_point

`start_point` needs to return the *first* character's span, but it would
previously call `find_width_of_character_at_span` which returns the span
of the *last* character. The implementation is now fixed.

Other changes:

- Docs for start_point, end_point, find_width_of_character_at_span
  updated

- Minor simplification in find_width_of_character_at_span code

Fixes #81800
2021-02-17 23:51:14 +01:00
..
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