Protezione causata da "Errore: impossibile modificare la stringa, temporaneamente bloccata"

Question

Quando si esegue la protezione in un progetto Rails 4 con guard-rspec, durante l'apertura/chiusura di file in vim vedo sporadicamente il seguente errore. Ho provato ad aggiornare/downgrade di guardia, guardia-rspec, leva e altre librerie senza fortuna.

• rubino 2.0.0p247 (2013/06/27 revisione 41674) [x86_64-linux] versione
• Bundler 1.3.5
• Guardia versione 2.1.1

riportano di seguito le stacktrace vedo ogni pochi cicli di prova:

Error: can't modify string; temporarily locked 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:624:in `readline' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:624:in `block in readline' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:564:in `handle_read_errors' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:609:in `readline' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:384:in `retrieve_line' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:301:in `block in r' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:298:in `loop' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:298:in `r' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:276:in `re' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:254:in `rep' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:234:in `block (3 levels) in repl' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:232:in `loop' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:232:in `block (2 levels) in repl' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:231:in `catch' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:231:in `block in repl' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:230:in `catch' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_instance.rb:230:in `repl' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/pry-0.9.12.2/lib/pry/pry_class.rb:170:in `start' 
/home/charles/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/guard-2.1.1/lib/guard/interactor.rb:133:in `block in start' 
[1] Specs guard(main)> 

Answer 1

Aggiunta del rb-readline gemma al mio Gemfile sembra risolvere il problema.

gem "rb-readline", "~> 0.5.0" 

La mia ipotesi è la versione compilata rbenv di Ruby 2.0.0-P247 ha problemi readline, il che spiega il motivo per cui l'errore si verifica in pry_instance.rb:624:in 'readline'. Il progetto rb-readline è un'implementazione pura ruby ​​della libreria readline e sembra alleviare il problema.

Potrebbe esserci una soluzione migliore che implica la ricompilazione del rubino, ma non l'ho trovato.

Answer 2

Sembra essere un errore in Ruby 2.0.0 e 1.9.3 in effetti. Vedere https://bugs.ruby-lang.org/issues/8669

sua backport a Ruby 2.0.0 nella revisione 42216.

Answer 3

stai usando Sublime Text 3? Se sì, dovresti sicuramente check this out!

TLDR: Set "atomic_save": false.