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[Adolfo Jayme <fitoschido@xxxxxxxxx>]

*** This bug is a duplicate of bug 655619 ***
    https://bugs.launchpad.net/bugs/655619

** This bug has been marked a duplicate of bug 655619
   Auto-hinter muddles tildes/macrons in Ubuntu font <19px (ñĀÃāãŌÕōõ)

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https://bugs.launchpad.net/bugs/839189

Title:
  font hinting produces nonsensical results for tilde-a

Status in freetype package in Ubuntu:
  Triaged

Bug description:
  This is a problem with hinting, so I'm assigning it tentatively to FT,
  because I don't really know where the problem lies. As described below
  the problem is present on an installed Ubuntu 10.04, as well as
  completely pristine 11.04 run from a USB stick.

  Description:
  Font hinting fails completely for U+00E3 LATIN SMALL LETTER A WITH TILDE (ã). For instance in the "Ubuntu" font at 18pt size it's rendered indistinguishable from a macron, whereas at 19pt it's very clearly a tilde. The problem is not limited to a single font, or a single size, or only for small enough sizes. Another font exhibiting the same problem is Trebuchet MS -- the tilde looks perfect at 32pt, but at 33pt it's almost a straight line with barely visible trace of waves. Same for lower sizes: below 14pt it's rendered as a macron, 15 and 16 have it look right, then macron up until 23pt, then 24pt is great again but 25pt is a macron, etc.

  The same problem is not present for U+0303 COMBINING TILDE. A combined
  with it (ã) is rendered properly and visibly at all point sizes down
  to 8pt. At 7pt it does look like a straight line, but it's hard to
  judge because the font is so tiny.

  The attached .gif is a small animation clearly showing the issue.

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