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This prevents it from malfunctioning when `setopt prompt_subst` is off.

Add support for variant "utf8" locale suffix spelling. Fix dumb bug in iconv call that would cause it to hang.

For unspecified encodings, assume it's UTF-8 or compatible (e.g. ASCII) and muddle through without character encoding conversion.

In termsupport, use LC_CTYPE instead of LANG to enable byte-by-byte text processing. LANG doesn't seem to actually work.

Remove terminalapp plugin and fold its implementation in to lib/termsupport.zsh. Replaces the redundant Terminal.app support that was recently added to termsupport.

Move the DISABLE_AUTO_TITLE check from title() to the preX hook
functions that call it, to allow the title() function to be used
directly by user or other callers.

contaminating script/function output

In older version of zsh, `add-zsh-hook` is not available, causing issues like:

```
/Users/hugo/.oh-my-zsh/lib/termsupport.zsh:32: add-zsh-hook: function definition file not found
/Users/hugo/.oh-my-zsh/lib/termsupport.zsh:33: add-zsh-hook: function definition file not found
```

See https://github.com/robbyrussell/oh-my-zsh/issues/748. This patch pulls in the changes suggested in https://github.com/robbyrussell/oh-my-zsh/issues/748#issuecomment-37862691 by @mcornella and I have tested it on RHEL 5.

Display the hostname when running Mosh (http://mosh.mit.edu/).
Same thing as displaying "hostname" when running "ssh hostname".

Fixes formatting on some rare cases when a percent ends up
in the $CMD variable, like these below:

- When assigning a variable, $CMD ends up with the second parameter;
in this case, $CMD will contain '+%s%N', messing with the syntax:

 $ a=`date +%s%N`

- A function (or command in general) that contains a percent symbol:

 $ to\%() { echo $(( $1 * 100 / $3))\% } # $CMD=to%()
 $ to% 2 of 10 # $CMD=to%

Fixes #2182

Fixes issue #1884

Revert "Fixed Mac OS X Terminal.app related issue with extra newlines being printed out sometimes"

This reverts commit 8f89d4d5.

Before this patch, commands containing %-signs set the title wrong
(urxvt and xterm) [1] and produce strange output in urxvt [2].

test for bug 1:
> sleep 10 && echo %
sets title to "sleep 10 && echo %<<"
> sleep 10 && echo %f
doesn't change the title at all

test for bug 2 (only urxvt):
> echo %f
39m%f
^^^^^----- output

This is needed to play nice with plugins that need various hooks.

Fix by derekjw. closes #52.

Closes #45 #57 #58 #86.