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cmd/gofmt: gofmt -r can't parse 'var a SomeType -> var a AnotherType' #4430

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jmhodges opened this issue Nov 24, 2012 · 11 comments
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cmd/gofmt: gofmt -r can't parse 'var a SomeType -> var a AnotherType' #4430

jmhodges opened this issue Nov 24, 2012 · 11 comments
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FrozenDueToAge Unfortunate

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@jmhodges
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$  gofmt -r 'var a SomeType -> var a AnotherType' run_test.go 
parsing pattern var a msg : .:1:1: expected operand, found 'var'
@jmhodges
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Comment 1:

Not a huge deal, since I can just sed it, but it would be nice to use the same tool.

@minux
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minux commented Nov 24, 2012

Comment 2:

a related issue: https://golang.org/issue/4406
gofmt's -r options use go/parser.ParseExpr to parse the input, so only
expression is allowed in a rewrite.

@griesemer
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Comment 3:

Owner changed to @griesemer.

@rsc
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rsc commented Dec 9, 2012

Comment 4:

Labels changed: added priority-later, removed priority-triage.

Status changed to Accepted.

@rsc
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rsc commented Dec 9, 2012

Comment 5:

Labels changed: added go1.1maybe, removed go1.1.

@rsc
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rsc commented Dec 10, 2012

Comment 6:

Labels changed: added size-l.

@robpike
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robpike commented Mar 7, 2013

Comment 7:

Labels changed: removed go1.1maybe.

@rsc
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rsc commented Nov 27, 2013

Comment 8:

Labels changed: added go1.3maybe.

@rsc
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rsc commented Dec 4, 2013

Comment 9:

Labels changed: added release-none, removed go1.3maybe.

@rsc
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rsc commented Dec 4, 2013

Comment 10:

Labels changed: added repo-main.

@griesemer
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Comment 11:

The gofmt rewrite mechanism is nice but also a historical artifact. At this point it
makes more sense to have a more general and separate rewrite tool instead.
Making this specific feature work in gofmt will only prompt other rewrite notations that
are also not accepted. Decided to not take any action and leave this to a future, more
sophisticated tool.

Status changed to Unfortunate.

@golang golang locked and limited conversation to collaborators Jun 24, 2016
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@jmhodges @rsc @minux @robpike @griesemer @gopherbot