Commits on Feb 20, 2023

1. Do not rely on /usr/bin/env in critical paths …

   rbenv uses a lot of sub shell script calls, and `#!/usr/bin/env bash` is
   executed each time. This is not very efficient depending on the PATH
   settings.
   
   This changeset is to use `$BASH rbenv-*` when calling `rbenv-*` in
   critical paths to invoke ruby. This eliminates the overhead of calling
   `/usr/bin/env`.
   
   Before:
   ```
   $ time ruby -v
   ruby 3.3.0dev (2023-02-20T01:33:06Z master 7d5794bad5) [x86_64-linux]
   
   real    0m0.532s
   user    0m0.022s
   sys     0m0.087s
   ```
   
   After:
   ```
   $ time ruby -v
   ruby 3.3.0dev (2023-02-20T01:33:06Z master 7d5794bad5) [x86_64-linux]
   
   real    0m0.204s
   user    0m0.018s
   sys     0m0.028s
   ```

   

   mame committed Feb 20, 2023
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