x/tools/gopls: refactor.extract.variable fails at package level

[adonovan]

package p
var x = «1 + 2» // refactor.extract.variable: "cannot find location to insert extraction"

Ideally it would produce this output:

package p
var x1 = 1 + 2
var x = x1

[gabyhelp]

Related Issues

• x/tools/gopls: refactor.extract.variable inserts new statement before the scope of its free symbols #70563
• x/tools/gopls: refactor.extract.variable on multi-valued expression produces invalid code #70561 (closed)
• x/tools/gopls: refactor.extract.variable on RHS of const declaration produces invalid code #70562

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[gopherbot]

Change https://go.dev/cl/633597 mentions this issue: gopls/internal/golang: support extract variable at top level