bug#15239: 24.3.50; doc string of `fringe-styles'

[Lars Ingebrigtsen <larsi@gnus.org>]

Drew Adams <drew.adams@oracle.com> writes:

> Unless I'm missing something, this doc string seems wrong on several
> counts.  And it is important because it is referred to by the doc of
> various fringe functions and variables, including `fringe-mode' itself.
>
> 1. The doc says that an alist element "has the form (NAME . WIDTH),
>    where NAME is a mnemonic fringe mode name (a symbol)".
>
>    Wrong.  NAME is *NOT* a symbol.  Presumably this wants instead to say
>    that NAME is a symbol name.  But why it would want to say that here
>    is not clear anyway.

Fixed on trunk.

> 2. The doc says that "WIDTH is one of the following:" followed by this:
>
>    "a cons cell (LEFT . RIGHT), where LEFT and RIGHT are respectively
>     the left and right fringe widths in pixels, or nil (meaning to
>     disable that fringe)."
>
>    Wrong again.  `nil' for LEFT or RIGHT does *NOT* mean to "disable
>    that fringe".  It means to "use the default width (8 pixels)", the
>    same thing `nil' means as a non-cons value for WIDTH, but in this
>    case only for "that fringe".

Fixed throughout the file.

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