gocomma like go imports?

[Timothy Bone]

not sure how reasonable an idea this is, but it would be nice if a tool could auto add missing commas, as that happens to me enough that it would be useful. i'm thinking something like goreturns or goimports. any thoughts?

[Chris Manghane]

Add missing commas where? Between entries in a composite literal initialization? Seems like something gofmt could do.

On Tue, Jun 2, 2015 at 2:17 PM Timothy Bone <timot...@gmail.com> wrote:

not sure how reasonable an idea this is, but it would be nice if a tool could auto add missing commas, as that happens to me enough that it would be useful. i'm thinking something like goreturns or goimports. any thoughts?

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[Timothy Bone]

also multiple variable initializiation, multiple func parameters,.,.,,.but mostly i've thought for composite literals

and func(a b string) (a,c,d e int)

[Volker Dobler]

There is a fundamental difference between inserting import

statements and inserting commas: goimports works on

syntactically *correct* code and tries to make it semantically

meaningful by inserting appropriate import statements so that

the syntactical correct time.Second becomes semantically

sensible.

Inserting commas would have to work on a *syntactically*

*malformed* code which cannot be parsed by standard means.

Such stuff is tricky to impossible. Your example looks innocent,

but where would you insert commas in this parameter list:

  func f(foo bar waz det zup) int

If waz and zup are types than this might be f(foo, bar waz, det zup)

if only zup is a type it presumably means f(foo, bar, waz, det zup).

Now what if both bar and waz are types? Applying some heuristics

her will produce more confusion than requiring everybody to type

some commas.

V.