What is the difference between oh-my-bash completion and bash-completion?

[madalinignisca]

What is the difference between oh-my-bash completion and bash-completion with each package completion script?

I'm confused if to add or not for example git completion to oh-my-bash, if I already have the git's bash completions enabled in bash-completion?

[akinomyoga]

They are just independent implementations and unrelated. I'd say the quality is usually better in bash-completion, but some completions in Oh My Bash cover commands not covered by bash-completion.

I'm confused if to add or not for example git completion to oh-my-bash,

There are three different providers here.

• git
• bash-completion
• oh-my-bash

Actually, the git completion is provided by git. bash-completion itself does not provide the git completion. oh-my-bash doesn't provide the git completion either. However, both bash-completion and oh-my-bash have a mechanism to search and load the git completion provided by the git installation. Here's the detail:

• The git packages of some distributions install a hook into bash-completion so that the git completion provided by the git package is automatically loaded by bash-completion. If you observe that the git completion is ready just by loading bash-completion, it means that the git package in your distribution sets it up.
• oh-my-bash's "git completion" is actually just a loader of the git completion by git. It searches the system for any git completion provided by the git package. When it doesn't find any git completion, it falls back to the bundled version of the git completion, which is just a copy of the git completion in a certain version of the upstream git project.

So as far as the git completion provided by the git package is found in the system, the git completion loaded through bash-completion and that loaded through oh-my-bash should be equivalent. Just the loading locations are different.

if I already have the git's bash completions enabled in bash-completion?

If the git completion is already enabled through the hook in bash-completion, actually Oh My Bash's git completion becomes no-op because it detects the existing git completion and skips the processing.

[madalinignisca]

Thank you very much @akinomyoga. That was very detailed.