`space-infix-ops`: add option for PEP8-style default parameters?

Would it be possible to add an option to space-infix-ops to allow or enforce assignment without spaces for ES6 default parameters?

The use case for the rule - what is it trying to prevent or flag?

As of ESLint 1.2.0, space-infix-ops also applies to assignments. As such, developers who prefer to enforce spaces around assignments as per other ops but wish to omit them only in default function parameters will now receive an unwanted warning or error.

Whether the rule is trying to prevent an error or is purely stylistic

Purely stylistic, but intended to remove a false positive.

Why you believe this rule is generic enough to be included

Default parameter value assignments are different from other types of variable assignments, in that they are part of a function’s definition. This has different implications for how you read them as you scan through code. As such, developers may wish to apply different formatting rules to them according to their preferred style.

For an example from a community where this feature already exists, Python’s Style Guide (PEP8) recommends spaces around all binary operators except for when assigning default parameter values. It’s likely that developers with Python experience who are using default parameters will already be using this style.

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[BYK]

Sigh, I should start working on this as a new rule as agreed above: space-ops. I’m a bit swamped but I think this belongs to core.

[insin]

With ESLint 1.3.1:

Config (via eslint-config-standard):

"space-infix-ops": 2,

Code (where the function is defined on line 14):

function screen(state='search', action) {
  switch (action.type) {
    case LOGOUT:
      window.location.hash = ''
      return getDefaultSlug()
    case CHANGE_SCREEN:
      return action.slug
  }
  return state
}

Current error message:

app\ducks\screen.js
  14:22  error  Infix operators must be spaced  space-infix-ops

Naming things, that will required a sleep and/or a shower 😄 How about compactDefaultParams as an initial suggestion?