Error stones in windows - "openpath: pathname too long"

Question

I recently started getting this error when starting a gem or binder. The only thing I can remember, I recently changed, updated the version of git.

I have been using MINGW32 as a shell, and it has been working fine for over a year now.

I made sure git is in my PATH, and now I'm not sure what to look for next.

What will be the following that I could fix this problem?

Here is an example of the output I get. This example shows a stone to a hero, but I get the same results when I start the installation of the package

$ heroku console openpath: pathname too long (ignored) Directory "" File "chcp" openpath: pathname too long (ignored) Directory "" File "git" c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/helpers.rb:111:in ``': No such file or directory - git --version (Errno::ENOENT) from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/helpers.rb:111:in `has_git?' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/helpers.rb:116:in `git' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/command/base.rb:192:in `git_remotes' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/command/base.rb:170:in `extract_app_in_dir' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/command/base.rb:162:in `extract_app' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/command/run.rb:72:in `console' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/lib/heroku/command.rb:114:in `run' from c:/Ruby192/lib/ruby/gems/1.9.1/gems/heroku-2.14.0/bin/heroku:14:in `<top (required)>' from c:/Ruby192/bin/heroku:19:in `load' from c:/Ruby192/bin/heroku:19:in `<main>' 

and here is line 111 in helpers.rb mentioned above.

 def has_git? %x{ git --version } #this is 111 $?.success? end 

Answer 1

This error message appears from the dln_find.c file in Ruby, which throws this error when it tries to create a path that is longer than MAXPATHLEN on the system.

According to this MSDN link , the maximum path length for a number of functions in the Windows API is only 248 characters - so, I would assume that MAXPATHLEN is defined as 248 in Ruby sources for Windows. (Alternatively, dln_find.c sources define it as 1024 unless otherwise specified.)

There are several ways to solve this problem in the program if you are a programmer, but the solution at the user level is probably due to the fact that you need to use a directory with a shorter name.

(So, which directory should be shorter? Well, there is a hint that the error message tells you which file it is trying to download, and that is chcp and git . Perhaps your git upgrade changed its directory name something too long, and you do you need to move it somewhere with a shorter name? Or ... it looks like this search code can iterate over each entry in your PATH environment variable and check it and throw it “too long” if any given feature is too long - maybe your PATH corrupted or has a very long record?)