Merge pull request #1657 from patricekrakow/warn-about-version

bash.asc | Warn about the version of the source code

Author: ben

book/A-git-in-other-environments/sections/bash.asc

@@ -4,8 +4,9 @@
 If you're a Bash user, you can tap into some of your shell's features to make your experience with Git a lot friendlier.
 Git actually ships with plugins for several shells, but it's not turned on by default.
 
-First, you need to get a copy of the `contrib/completion/git-completion.bash` file out of the Git source code.
-Copy it somewhere handy, like your home directory, and add this to your `.bashrc`:
+First, you need to get a copy of the completions file from the source code of the Git release you're using.
+Check your version by typing `git version`, then use `git checkout tags/vX.Y.Z`, where `vX.Y.Z` corresponds to the version of Git you are using.
+Copy the `contrib/completion/git-completion.bash` file somewhere handy, like your home directory, and add this to your `.bashrc`:
 
 [source,console]
 ----