go/printer: consider permitting one-line "enum" const decls

[griesemer]

A declaration of the form:

const (
    Do = iota; Re; Mi; Fa; Sol; La; Ti;
)

gets formatted as:

const (
    Do = iota
    Re
    Mi
    Fa
    Sol
    La
    Ti
)

The former is close to what in other languages might be achieved with an "enum" declaration. If there's several such simple const decls, the latter form uses undue amount of space w/o much readability benefit.

Consider recognizing this special case and not introduce line-breaks if there were none in the original source.

[agnivade]

I can take a stab at this. @griesemer - Let me know if you already had something planned.

[griesemer]

@agnivade You're welcome to investigate and play with it but I am probably not going to look at this (or any related CLs) any time soon. We have a freeze coming up on May 1 and this is not important at all and we many more important issues to tackle at the moment. Thanks.

[agnivade]

Got it. Thanks.

[gopherbot]

Change https://golang.org/cl/109795 mentions this issue: go/printer: allow single-line const enum declarations

[griesemer]

The pending CL seems ok but I think we need to determine if we actually want this change.