Johannes Altmanninger 360cfdb7ae completions/git: fix arg completion for third-party git commands, again ...

Commit 50e595503e (completions/git: fix completions for third-party git
commands, 2025-03-03) wasn't quite right, as we can see in the linked
reproduction:

	$ fish_trace=1 complete -C 'git machete add --onto '
	----> complete -C git-machete\ add\n--onto\

The recursive completion invocation contains a spurious newline, which means
that "--onto" is the command name.  The newline is produced by "string escape
-- add --onto" inside a command substitution.

Fix this by interpreting newlines as list separators, and then joining
by spaces.

Fixes #11319

2025-03-25 11:16:18 +01:00

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