[BusyBox] [PATCH] ASH's read bugs

[Fernando Silveira]

As I'm seeing patches beeing submited in the maillist, I'm posting this
patch both here and in the bug report site. Here follows the
description:

There is some bugs in ASH's read. I've fixed those that I found and
added a new feature. Here they are:

- Timeout:
  - The timeout option counts only the first char: it will stop counting
    the time after you press the first key;

  - When the timeout option is used, the first char cannot be erased and
    is handled wrongly if it is a backslash and/or with IFS environment
    variable;

  - Some special characters, when in the first field, cannot be shown or
    are treated wrong;

  - The exit code is wrong and the environment variable is empty when
    the timeout is expired;

- Silent:

  - I added a `silent' feature: when the -s argument is provided, the
    characters are not echoed;

The comparisons I made was using `bash' and `zsh'. The patch is
attached.

-- 
Fernando Silveira <fsilveira at gmail.com>
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