[Bug 584632]

[Killjay]

The basic issue reported in comment #0 involves the attribution line
being a different font face than the User configured body composition
font.

"If the user backspaces in the first line all the way to the left, the
newly typed text picks up the font style of this pre populated text." I
quote this for two reasons. Esther is referring to the attribution line
as "pre populated text". Then the back space action and resulting font
change is a bug occurring because of a whitespace/end-of-line bug in the
editor/composer code library.

IIRC, it was TB12 had a sudden appearance of a bug that was being masked
by the Editor whitespace bug. The essence of the bug was EOL was
incorrectly handled as whitespace in some cases. With Editor patched, TB
Devs patched their TB bug.

We still have font face changing issues with TB and there are current
bugs open.

The different font face of the attribution is a bug itself and
independent of this bug report.

Speaking as a TB bug triage team member, I think this bug should be
closed since the bug in Editor that was fixed has altered the code-base
so the original conditions are changed.

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https://bugs.launchpad.net/bugs/584632

Title:
  composer changes font mid email

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