Re: [PATCH/RFC 2/2] completion: allow use without compiling

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Junio C Hamano wrote:
>
> If we are going to do this, wouldn't it make more sense to revert the
> rename of the script, so that people can keep relying on the name of the
> script being "git-completion.bash", _but_ make it produce a pre-compiled
> form to a separate file when invoked in some particular way?

Wouldn't relying on "git-completion.bash" to produce the pre-compiled
form cause problems if someone is running the build on a bash-less
system? I thought this issue was already raised by Shawn.

I guess we could ignore that issue now, and just say that you have to
build the pre-compiled form on systems with bash?

>
> Then at the runtime:
>
>  (0) If the script notices that it has already learned the command list
>      it uses it; otherwise,
>
>  (1) If the script notices that there is a file that contains the command
>      list, it sources it; otherwise,
>
>  (2) The script lazily builds the command list for its own use.
>
> And at the buildtime, Makefile can run the script in "generation mode",
> and install the output to where (1) above expects to see.

I assume you're suggesting this to ease the upgrade path for users. It
works nicely, we could just install the generated lists in the same path
(contrib/completion/) and then users would be free to copy the two files
anywhere as long as they're in the same directory. The only downside I
see is there's now two files, but that's ok with me.
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