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doc: cleanup and simplify
Make it shorter and more structured, update ToC remove ref from links, etc Signed-off-by: Alexander Bezzubov <bzz@apache.org>
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Alexander Bezzubov
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README.md
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README.md
@ -1,24 +1,21 @@
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# enry [](https://godoc.org/github.com/src-d/enry) [](https://travis-ci.com/src-d/enry) [](https://codecov.io/gh/src-d/enry)
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File programming language detector and toolbox to ignore binary or vendored files. *enry*, started as a port to _Go_ of the original [linguist](https://github.com/github/linguist) _Ruby_ library, that has an improved *2x performance*.
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Programming language detector and toolbox to ignore binary or vendored files. *enry*, started as a port to _Go_ of the original [linguist](https://github.com/github/linguist) _Ruby_ library, that has an improved *2x performance*.
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* [Installation](#installation)
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* [Examples](#examples)
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* [CLI](#cli)
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* [Java bindings](#java-bindings)
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* [Python bindings](#python-bindings)
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* [Library](#library)
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* [Go](#go)
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* [Java bindings](#java-bindings)
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* [Python bindings](#python-bindings)
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* [Divergences from linguist](#divergences-from-linguist)
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* [Benchmarks](#benchmarks)
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* [Why Enry?](#why-enry)
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* [Development](#development)
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* [Sync with github/linguist upstream](#sync-with-githublinguist-upstream)
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* [Misc](#misc)
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* [Benchmark](#benchmark)
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* [Faster regexp engine (optional)](#faster-regexp-engine-optional)
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* [License](#license)
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Installation
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------------
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# CLI
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The recommended way to install the `enry` command-line tool is to either
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[download a release](https://github.com/src-d/enry/releases) or run:
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@ -27,10 +24,29 @@ The recommended way to install the `enry` command-line tool is to either
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(cd "$(mktemp -d)" && go mod init enry && go get github.com/src-d/enry/v2/cmd/enry)
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```
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Examples
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--------
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*enry* CLI accepts similar flags (`--breakdown/--json`) and produce an output, similar to *linguist*:
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If you are working in a [Go module](https://github.com/golang/go/wiki/Modules),
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```bash
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$ enry
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97.71% Go
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1.60% C
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0.31% Shell
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0.22% Java
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0.07% Ruby
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0.05% Makefile
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0.04% Scala
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0.01% Gnuplot
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```
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Note that enry's CLI **_does not need an actual git repository to work_**, which is intentionally different from the linguist.
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# Library
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*enry* is also available as a native Go library with FFI bindings for multiple programming languages.
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## Go
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In a [Go module](https://github.com/golang/go/wiki/Modules),
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import `enry` to the module by running:
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```go
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@ -61,9 +77,9 @@ lang := enry.GetLanguage("foo.cpp", []byte("<cpp-code>"))
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// result: C++ true
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```
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Note that the returned boolean value `safe` is set either to `true`, if there is only one possible language detected, or to `false` otherwise.
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Note that the returned boolean value `safe` is `true` if there is only one possible language detected.
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To get a list of possible languages for a given file, you can use the plural version of the detecting functions.
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To get a list of all possible languages for a given file, there is a plural version of the same API.
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```go
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langs := enry.GetLanguages("foo.h", []byte("<cpp-code>"))
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@ -76,96 +92,18 @@ langs := enry.GetLanguagesByFilename("Gemfile", []byte("<content>"), []string{})
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// result: []string{"Ruby"}
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```
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CLI
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------------
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You can use enry as a command,
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```bash
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$ enry --help
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enry v2.0.0 build: 05-08-2019_20_40_35 commit: 6ccf0b6, based on linguist commit: e456098
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enry, A simple (and faster) implementation of github/linguist
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usage: enry [-mode=(file|line|byte)] [-prog] <path>
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enry [-mode=(file|line|byte)] [-prog] [-json] [-breakdown] <path>
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enry [-mode=(file|line|byte)] [-prog] [-json] [-breakdown]
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enry [-version]
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```
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and on repository root, it'll return an output similar to *linguist*'s output,
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```bash
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$ enry
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97.71% Go
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1.60% C
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0.31% Shell
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0.22% Java
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0.07% Ruby
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0.05% Makefile
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0.04% Scala
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0.01% Gnuplot
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```
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but not only the output; its flags are also the same as *linguist*'s ones,
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```bash
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$ enry --breakdown
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97.71% Go
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1.60% C
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0.31% Shell
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0.22% Java
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0.07% Ruby
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0.05% Makefile
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0.04% Scala
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0.01% Gnuplot
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Scala
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java/build.sbt
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java/project/plugins.sbt
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Java
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java/src/main/java/tech/sourced/enry/Enry.java
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java/src/main/java/tech/sourced/enry/GoUtils.java
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java/src/main/java/tech/sourced/enry/Guess.java
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java/src/test/java/tech/sourced/enry/EnryTest.java
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Makefile
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Makefile
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java/Makefile
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Go
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benchmark_test.go
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```
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even the JSON flag,
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```bash
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$ enry --json | jq .
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{
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"C": [
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"internal/tokenizer/flex/lex.linguist_yy.c",
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"internal/tokenizer/flex/lex.linguist_yy.h",
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"internal/tokenizer/flex/linguist.h",
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"python/_c_enry.c",
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"python/enry.c"
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],
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"Gnuplot": [
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"benchmarks/plot-histogram.gp"
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],
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"Go": [
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"benchmark_test.go",
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```
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Note that enry's CLI **_doesn't need a git repository to work_**, which is intentionally different from the linguist.
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## Java bindings
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Generated Java bindings using a C shared library and JNI are available under [`java`](https://github.com/src-d/enry/blob/master/java).
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Generated Java bindings using a C shared library and JNI are available under [`java`](https://github.com/src-d/enry/blob/master/java) and published on Maven at [tech.sourced:enry-java](https://mvnrepository.com/artifact/tech.sourced/enry-java) for macOS and linux.
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A library is published on Maven as [tech.sourced:enry-java](https://mvnrepository.com/artifact/tech.sourced/enry-java) for macOS and linux platforms. Windows support is planned under [src-d/enry#150](https://github.com/src-d/enry/issues/150).
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# Python bindings
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## Python bindings
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Generated Python bindings using a C shared library and cffi are not available yet and are WIP under [src-d/enry#154](https://github.com/src-d/enry/issues/154).
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Generated Python bindings using a C shared library and cffi are WIP under [src-d/enry#154](https://github.com/src-d/enry/issues/154).
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A library is going to be published on pypi as [enry](https://pypi.org/project/enry/) for
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macOS and linux platforms. Windows support is planned under [src-d/enry#150](https://github.com/src-d/enry/issues/150).
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Divergences from linguist
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------------
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@ -199,16 +137,17 @@ In all the cases above that have an issue number - we plan to update enry to mat
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Benchmarks
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------------
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Enry's language detection has been compared with Linguist's one. In order to do that, Linguist's project directory [*linguist/samples*](https://github.com/github/linguist/tree/master/samples) was used as a set of files to run benchmarks against.
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Enry's language detection has been compared with Linguist's on [*linguist/samples*](https://github.com/github/linguist/tree/master/samples).
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We got these results:
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The histogram shows the number of files detected (y-axis) per time interval bucket (x-axis). As one can see, most of the files were detected faster by enry.
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The histogram shows the _number of files_ (y-axis) per _time interval bucket_ (x-axis).
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Most of the files were detected faster by enry.
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We found few cases where enry turns slower than linguist due to
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Go regexp engine being slower than Ruby's, based on [oniguruma](https://github.com/kkos/oniguruma) library, written in C.
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There are several cases where enry is slower than linguist due to
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Go regexp engine being slower than Ruby's on, wich is based on [oniguruma](https://github.com/kkos/oniguruma) library, written in C.
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See [instructions](#misc) for running enry with oniguruma.
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@ -216,9 +155,9 @@ See [instructions](#misc) for running enry with oniguruma.
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Why Enry?
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------------
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In the movie [My Fair Lady](https://en.wikipedia.org/wiki/My_Fair_Lady), [Professor Henry Higgins](http://www.imdb.com/character/ch0011719/?ref_=tt_cl_t2) is one of the main characters. Henry is a linguist and at the very beginning of the movie enjoys guessing the origin of people based on their accent.
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In the movie [My Fair Lady](https://en.wikipedia.org/wiki/My_Fair_Lady), [Professor Henry Higgins](http://www.imdb.com/character/ch0011719/) is a linguist who at the very beginning of the movie enjoys guessing the origin of people based on their accent.
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"Enry Iggins" is how [Eliza Doolittle](http://www.imdb.com/character/ch0011720/?ref_=tt_cl_t1), [pronounces](https://www.youtube.com/watch?v=pwNKyTktDIE) the name of the Professor during the first half of the movie.
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"Enry Iggins" is how [Eliza Doolittle](http://www.imdb.com/character/ch0011720/), [pronounces](https://www.youtube.com/watch?v=pwNKyTktDIE) the name of the Professor.
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## Development
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@ -228,7 +167,7 @@ To build enry's CLI run:
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this will generate a binary in the project's root directory called `enry`.
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To run the tests:
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To run the tests use:
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make test
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@ -267,6 +206,7 @@ Separating all the necessary "manual" code changes to a different PR that includ
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## Misc
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<details>
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<summary>Running a benchmark & faster regexp engine</summary>
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### Benchmark
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