[DOC] Fold too long lines

doc/hacking.md

@@ -1,12 +1,16 @@
 # Ruby Hacking Guide
 
-This document gives some helpful instructions which should make your experience as a Ruby core developer easier.
+This document gives  some helpful instructions which  should make your
+experience as a Ruby core developer easier.
 
 ## Setup
 
 ### Make
 
-It's common to want to compile things as quickly as possible. Ensuring `make` has the right `--jobs` flag will ensure all processors are utilized when building software projects. To do this effectively, you can set `MAKEFLAGS` in your shell configuration/profile:
+It's common to want to compile things as quickly as possible. Ensuring
+`make`  has the  right `--jobs`  flag will  ensure all  processors are
+utilized when building  software projects To do  this effectively, you
+can set `MAKEFLAGS` in your shell configuration/profile:
 
 ``` shell
 # On macOS with Fish shell:
@@ -36,7 +40,8 @@ make install
 
 ### Without Documentation
 
-If you are frequently building Ruby, this will reduce the time it takes to `make install`.
+If you  are frequently  building Ruby,  this will  reduce the  time it
+takes to `make install`.
 
 ``` shell
 ../configure --disable-install-doc
@@ -46,13 +51,15 @@ If you are frequently building Ruby, this will reduce the time it takes to `make
 
 ### Run Local Test Script
 
-You can create a file in the Ruby source root called `test.rb`. You can build `miniruby` and execute this script:
+You can create  a file in the Ruby source  root called `test.rb`.  You
+can build `miniruby` and execute this script:
 
 ``` shell
 make run
 ```
 
-If you want more of the standard library, you can use `runruby` instead of `run`.
+If  you want  more  of the  standard library,  you  can use  `runruby`
+instead of `run`.
 
 ## Running Tests
 
@@ -64,7 +71,8 @@ make check
 
 ### Run Bootstrap Tests
 
-There are a set of tests in `bootstraptest/` which cover most basic features of the core Ruby language.
+There are  a set of tests  in `bootstraptest/` which cover  most basic
+features of the core Ruby language.
 
 ``` shell
 make test
@@ -72,7 +80,8 @@ make test
 
 ### Run Extensive Tests
 
-There are extensive tests in `test/` which cover a wide range of features of the Ruby core language.
+There  are extensive  tests in  `test/` which  cover a  wide range  of
+features of the Ruby core language.
 
 ``` shell
 make test-all
@@ -86,7 +95,8 @@ make test-all TESTS=../test/fiber/test_io.rb
 
 ### Run RubySpec Tests
 
-RubySpec is a project to write a complete, executable specification for the Ruby programming language.
+RubySpec is  a project to  write a complete,  executable specification
+for the Ruby programming language.
 
 ``` shell
 make test-spec