On Wed, Jan 9, 2013 at 9:24 AM, Philip Potter <philip.g.pot...@gmail.com>wrote:

> On 9 January 2013 08:37,  <wujek.sru...@gmail.com> wrote:
> You're quite right, this changed in 1.3. It's even the first entry in
> the 1.3 changelog:
>
> https://github.com/clojure/clojure/blob/clojure-1.3.0/changes.txt
>
> which reads:
>
>     1.1 Earmuffed Vars are No Longer Automatically Considered Dynamic
>
> The old convention was that vars surrounded with *earmuffs* were
> automatically considered dynamic and appropriate for a (binding [...])
> form. Now, everything must be explicitly made dynamic using ^:dynamic.
>

Just to be pedantic: in the past, ALL vars were dynamic, regardless of
earmuffs. There was a short period of time during the change of the default
where vars named with earmuffs were treated as if they had ^:dynamic
metadata (and they spit out a warning to developers that this behavior was
temporary).

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