Already initialized constant Rouge::Lexers:Shell::KEYWORDS

[stanhu]

Now that GitLab is using Rouge, it appears that Rouge is loading files automatically, causing Rails to warn with errors:

/Users/stanhu/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:20: warning: already initialized constant Rouge::Lexers::Shell::KEYWORDS
/Users/stanhu/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:20: warning: previous definition of KEYWORDS was here
/Users/stanhu/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:25: warning: already initialized constant Rouge::Lexers::Shell::BUILTINS
/Users/stanhu/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:25: warning: previous definition of BUILTINS was here

These loads happen twice:

1. https://github.com/jneen/rouge/blob/master/lib/rouge/lexers/powershell.rb#L5
2. https://github.com/jneen/rouge/blob/master/lib/rouge.rb#L43

Removing these lines seems to make the warnings go away. Is it possible to remove these automatic loads?

[jacobvosmaer]

Sounds like a use case for Ruby's require instead of load.

[rumpelsepp]

Among others I had replaced these load calls with require relative. I forgot to file a pull request for this.
https://github.com/rumpelsepp/rugments/commit/e6bdd4eeed47670710d48f53c4b7759a35f1f348

[stanhu]

@rumpelsepp Thanks. Took your work and made it work for the specs and rackup application in #298.

[rumpelsepp]

👍

[tejasbubane]

This happens in irb as well.
gem version 1.9.1.

/lib/rouge/lexers/shell.rb:20: warning: already initialized constant Rouge::Lexers::Shell::KEYWORDS
/lib/rouge/lexers/shell.rb:20: warning: previous definition of KEYWORDS was here
/lib/rouge/lexers/shell.rb:25: warning: already initialized constant Rouge::Lexers::Shell::BUILTINS
/lib/rouge/lexers/shell.rb:25: warning: previous definition of BUILTINS was here

[envygeeks]

/cc @jneen

[nhoizey]

I also have the issue with Jekyll and Kramdown…

[JoshCheek]

Why did they have the loads in the first place? Also, this is introduced in c8bf4a8

This is an alternative that maintains the load behaviour (again, IDK why it's there, a guess would be for reloading in rack when working tweaking the visual themes, but are better ways to achieve that, it does seem like the right solution would be to use require, except for in the case of rack, where we would want to add autoloading)

diff --git a/lib/rouge/lexers/shell.rb b/lib/rouge/lexers/shell.rb
index 8b7134e..2a7acea 100644
--- a/lib/rouge/lexers/shell.rb
+++ b/lib/rouge/lexers/shell.rb
@@ -17,12 +17,14 @@ module Rouge
         text.shebang?(/(ba|z|k)?sh/) ? 1 : 0
       end

-      KEYWORDS = %w(
+      KEYWORDS = "" unless defined? KEYWORDS
+      KEYWORDS.replace %w(
         if fi else while do done for then return function
         select continue until esac elif in
       ).join('|')

-      BUILTINS = %w(
+      BUILTINS = "" unless defined? BUILTINS
+      BUILTINS.replace %w(
         alias bg bind break builtin caller cd command compgen
         complete declare dirs disown echo enable eval exec exit
         export false fc fg getopts hash help history jobs kill let

[gpakosz]

Could this be fixed with a 1.9.2 maintenance release please?

[JoshCheek]

Aye, I've dealt with it by disallowing 1.9.1

[envygeeks]

Thanks @JoshCheek I totally did not know we could do what you did in a Gemspec.

[sc0ttwad3]

Still getting the issue... during Jekyll generations currently... (on Windows boxes as well -- below). Has @JoshCheek found a workaround? Steps involved?

C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:20: warning: already initialized constant Rouge::Lexers::Shell::KEYWORDS
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:20: warning: previous definition of KEYWORDS was here
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:25: warning: already initialized constant Rouge::Lexers::Shell::BUILTINS
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rouge-1.9.1/lib/rouge/lexers/shell.rb:25: warning: previous definition of BUILTINS was here

[stanhu]

I suspect the loads were used to make the visual test rackup work. If you make a change in the code, the loads will pull in the new code automatically. #298 emulates this behavior by manipulating the LOADED_FEATURES value.

[sc0ttwad3]

Great Ill give it a try, thx.

On Thu, Aug 27, 2015, 6:07 PM Stan Hu notifications@github.com wrote:

I suspect the loads were used to make the visual test rackup work. If you
make a change in the code, the loads will pull in the new code
automatically. #298 #298 emulates
this behavior by manipulating the LOADED_FEATURES value.

—
Reply to this email directly or view it on GitHub
#296 (comment).

[wolf99]

👍

[divoxx]

Why is load used everywhere instead of require ?

[gpakosz]

Which commit closes this issue please?

[jneen]

65c69f0. It's fixed as of 1.10.0.

[gpakosz]

Thank you!