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Implement parser for else chaining of helpers #892

Merged
merged 1 commit into from
Nov 8, 2014
Merged

Implement parser for else chaining of helpers #892

merged 1 commit into from
Nov 8, 2014

Commits on Oct 28, 2014

  1. Implement parser for else chaining of helpers 

    Allows users to chain multiple helpers together using their inverse callbacks. I.e.

```
{{#if foo}}
{{else if bar}}
{{else}}
{{/if}}
```

The control flow here effectively causes the helpers to be nested. The above is actually syntactic sugar for this:

```
{{#if foo}}
{{else}}
  {{#if bar}}
  {{else}}
  {{/if}}
{{/if}}
```

Any helper may be used in this manner, the only requirement is they support normal calls and inverse calls.

Introduces a breaking change in that `{{else foo}}` may no longer be used as a root level operator. Instead `{{^foo}}` must be used.

Fixes #72.
    @kpdecker
    kpdecker committed Oct 28, 2014
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