Set language on code blocks

NEWS.md

@@ -242,13 +242,13 @@ details of the default gems or bundled gems.
     * Kernel#caller, Thread::Backtrace::Location’s methods, etc. are also changed accordingly.
 
         Old:
-        ```
+        ```text
         test.rb:1:in `foo': undefined method `time' for an instance of Integer
                 from test.rb:2:in `<main>'
         ```
 
         New:
-        ```
+        ```text
         test.rb:1:in 'Object#foo': undefined method 'time' for an instance of Integer
                 from test.rb:2:in '<main>'
         ```
@@ -259,21 +259,24 @@ details of the default gems or bundled gems.
     * Other keys now have spaces around `=>`: `'{"user" => 1}'`, while previously they didn't: `'{"user"=>1}'`
 
 * Kernel#Float() now accepts a decimal string with decimal part omitted. [[Feature #20705]]
-  ```
+
+  ```rb
   Float("1.")    #=> 1.0 (previously, an ArgumentError was raised)
   Float("1.E-1") #=> 0.1 (previously, an ArgumentError was raised)
   ```
 
 * String#to_f now accepts a decimal string with decimal part omitted. [[Feature #20705]]
   Note that the result changes when an exponent is specified.
-  ```
+
+  ```rb
   "1.".to_f    #=> 1.0
   "1.E-1".to_f #=> 0.1 (previously, 1.0 was returned)
   ```
 
 * Object#singleton_method now returns methods in modules prepended to or included in the
   receiver's singleton class. [[Bug #20620]]
-  ```
+
+  ```rb
   o = Object.new
   o.extend(Module.new{def a = 1})
   o.singleton_method(:a).call #=> 1
@@ -288,17 +291,17 @@ details of the default gems or bundled gems.
 * Net::HTTP
 
     * Removed the following deprecated constants:
-        `Net::HTTP::ProxyMod`
-        `Net::NetPrivate::HTTPRequest`
-        `Net::HTTPInformationCode`
-        `Net::HTTPSuccessCode`
-        `Net::HTTPRedirectionCode`
-        `Net::HTTPRetriableCode`
-        `Net::HTTPClientErrorCode`
-        `Net::HTTPFatalErrorCode`
-        `Net::HTTPServerErrorCode`
-        `Net::HTTPResponseReceiver`
-        `Net::HTTPResponceReceiver`
+        * `Net::HTTP::ProxyMod`
+        * `Net::NetPrivate::HTTPRequest`
+        * `Net::HTTPInformationCode`
+        * `Net::HTTPSuccessCode`
+        * `Net::HTTPRedirectionCode`
+        * `Net::HTTPRetriableCode`
+        * `Net::HTTPClientErrorCode`
+        * `Net::HTTPFatalErrorCode`
+        * `Net::HTTPServerErrorCode`
+        * `Net::HTTPResponseReceiver`
+        * `Net::HTTPResponceReceiver`
 
       These constants were deprecated from 2012.
 

benchmark/README.md

@@ -26,7 +26,7 @@ benchmark-driver benchmark/*.yml
 
 See also:
 
-```console
+```text
 Usage: benchmark-driver [options] RUBY|YAML...
     -r, --runner TYPE                Specify runner type: ips, time, memory, once, block (default: ips)
     -o, --output TYPE                Specify output type: compare, simple, markdown, record, all (default: compare)

doc/command_line/environment.md

@@ -151,14 +151,15 @@ nil
 Ruby code may also define warnings for certain categories;
 these are the default settings for the defined categories:
 
-```
+```ruby
 Warning[:experimental] # => true
 Warning[:deprecated]   # => false
 Warning[:performance]  # => false
 ```
 
 They may also be set:
-```
+
+```ruby
 Warning[:experimental] = false
 Warning[:deprecated]   = true
 Warning[:performance]  = true

doc/contributing/building_ruby.md

@@ -32,7 +32,7 @@
     the OS default place, typically using Homebrew on macOS, pass the
     `--with-opt-dir` (or `--with-gmp-dir` for gmp) option to `configure`.
 
-    ``` shell
+    ```sh
     configure --with-opt-dir=$(brew --prefix gmp):$(brew --prefix jemalloc)
     ```
 
@@ -43,7 +43,7 @@
     latter environment variable is not embedded and is only used when
     building the extension libraries.
 
-    ``` shell
+    ```sh
     export CONFIGURE_ARGS=""
     for ext in openssl readline libyaml zlib; do
       CONFIGURE_ARGS="${CONFIGURE_ARGS} --with-$ext-dir=$(brew --prefix $ext)"
@@ -71,7 +71,7 @@
         Download the latest tarball from [Download Ruby] page and extract
         it. Example for Ruby 3.0.2:
 
-        ``` shell
+        ```sh
         tar -xzf ruby-3.0.2.tar.gz
         cd ruby-3.0.2
         ```
@@ -80,20 +80,20 @@
 
         Checkout the CRuby source code:
 
-        ``` shell
+        ```sh
         git clone https://github.com/ruby/ruby.git
         cd ruby
         ```
 
         Generate the configure file:
 
-        ``` shell
+        ```sh
         ./autogen.sh
         ```
 
 2. Create a `build` directory separate from the source directory:
 
-    ``` shell
+    ```sh
     mkdir build && cd build
     ```
 
@@ -102,13 +102,13 @@
 
 3. We'll install Ruby in `~/.rubies/ruby-master`, so create the directory:
 
-    ``` shell
+    ```sh
     mkdir ~/.rubies
     ```
 
 4. Run configure:
 
-    ``` shell
+    ```sh
     ../configure --prefix="${HOME}/.rubies/ruby-master"
     ```
 
@@ -117,15 +117,15 @@
 
 5. Build Ruby:
 
-    ``` shell
+    ```sh
     make
     ```
 
 6. [Run tests](testing_ruby.md) to confirm your build succeeded.
 
 7. Install Ruby:
 
-    ``` shell
+    ```sh
     make install
     ```
 
@@ -159,7 +159,7 @@ In GNU make[^caution-gmake-3] and BSD make implementations, to run a specific ma
 parallel, pass the flag `-j<number of processes>`. For instance, to run tests
 on 8 processes, use:
 
-``` shell
+```sh
 make test-all -j8
 ```
 
@@ -169,7 +169,7 @@ Having 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
+```sh
 # On macOS with Fish shell:
 export MAKEFLAGS="--jobs "(sysctl -n hw.ncpu)
 
@@ -193,7 +193,7 @@ certain features.  It can be useful in Ruby development because it allows for
 faster build times. Miniruby is built before Ruby. A functional Miniruby is
 required to build Ruby. To build Miniruby:
 
-``` shell
+```sh
 make miniruby
 ```
 
@@ -215,7 +215,7 @@ following make targets:
 You should configure Ruby without optimization and other flags that may
 interfere with debugging:
 
-``` shell
+```sh
 ./configure --enable-debug-env optflags="-O0 -fno-omit-frame-pointer"
 ```
 
@@ -225,7 +225,7 @@ Using the address sanitizer (ASAN) is a great way to detect memory issues. It
 can detect memory safety issues in Ruby itself, and also in any C extensions
 compiled with and loaded into a Ruby compiled with ASAN.
 
-``` shell
+```sh
 ./autogen.sh
 mkdir build && cd build
 ../configure CC=clang-18 cflags="-fsanitize=address -fno-omit-frame-pointer -DUSE_MN_THREADS=0" # and any other options you might like
@@ -239,7 +239,7 @@ two hours on my laptop); the `RUBY_TEST_TIMEOUT_SCALE` and
 `SYNTAX_SUGEST_TIMEOUT` variables are required to make sure tests don't
 spuriously fail with timeouts when in fact they're just slow.
 
-``` shell
+```sh
 RUBY_TEST_TIMEOUT_SCALE=5 SYNTAX_SUGGEST_TIMEOUT=600 make check
 ```
 
@@ -274,7 +274,7 @@ Please note, however, the following caveats!
 
 You need to be able to use gcc (gcov) and lcov visualizer.
 
-``` shell
+```sh
 ./autogen.sh
 ./configure --enable-gcov
 make