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89 lines
3.4 KiB
Markdown
89 lines
3.4 KiB
Markdown
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Golint is a linter for Go source code.
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[](https://travis-ci.org/golang/lint)
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## Installation
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Golint requires a
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[supported release of Go](https://golang.org/doc/devel/release.html#policy).
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go get -u golang.org/x/lint/golint
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To find out where `golint` was installed you can run `go list -f {{.Target}} golang.org/x/lint/golint`. For `golint` to be used globally add that directory to the `$PATH` environment setting.
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## Usage
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Invoke `golint` with one or more filenames, directories, or packages named
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by its import path. Golint uses the same
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[import path syntax](https://golang.org/cmd/go/#hdr-Import_path_syntax) as
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the `go` command and therefore
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also supports relative import paths like `./...`. Additionally the `...`
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wildcard can be used as suffix on relative and absolute file paths to recurse
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into them.
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The output of this tool is a list of suggestions in Vim quickfix format,
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which is accepted by lots of different editors.
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## Purpose
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Golint differs from gofmt. Gofmt reformats Go source code, whereas
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golint prints out style mistakes.
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Golint differs from govet. Govet is concerned with correctness, whereas
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golint is concerned with coding style. Golint is in use at Google, and it
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seeks to match the accepted style of the open source Go project.
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The suggestions made by golint are exactly that: suggestions.
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Golint is not perfect, and has both false positives and false negatives.
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Do not treat its output as a gold standard. We will not be adding pragmas
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or other knobs to suppress specific warnings, so do not expect or require
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code to be completely "lint-free".
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In short, this tool is not, and will never be, trustworthy enough for its
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suggestions to be enforced automatically, for example as part of a build process.
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Golint makes suggestions for many of the mechanically checkable items listed in
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[Effective Go](https://golang.org/doc/effective_go.html) and the
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[CodeReviewComments wiki page](https://golang.org/wiki/CodeReviewComments).
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## Scope
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Golint is meant to carry out the stylistic conventions put forth in
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[Effective Go](https://golang.org/doc/effective_go.html) and
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[CodeReviewComments](https://golang.org/wiki/CodeReviewComments).
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Changes that are not aligned with those documents will not be considered.
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## Contributions
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Contributions to this project are welcome provided they are [in scope](#scope),
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though please send mail before starting work on anything major.
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Contributors retain their copyright, so we need you to fill out
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[a short form](https://developers.google.com/open-source/cla/individual)
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before we can accept your contribution.
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## Vim
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Add this to your ~/.vimrc:
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set rtp+=$GOPATH/src/golang.org/x/lint/misc/vim
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If you have multiple entries in your GOPATH, replace `$GOPATH` with the right value.
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Running `:Lint` will run golint on the current file and populate the quickfix list.
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Optionally, add this to your `~/.vimrc` to automatically run `golint` on `:w`
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autocmd BufWritePost,FileWritePost *.go execute 'Lint' | cwindow
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## Emacs
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Add this to your `.emacs` file:
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(add-to-list 'load-path (concat (getenv "GOPATH") "/src/golang.org/x/lint/misc/emacs/"))
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(require 'golint)
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If you have multiple entries in your GOPATH, replace `$GOPATH` with the right value.
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Running M-x golint will run golint on the current file.
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For more usage, see [Compilation-Mode](http://www.gnu.org/software/emacs/manual/html_node/emacs/Compilation-Mode.html).
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