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completion: improve handling of --orphan option of switch/checkout

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The --orphan option is used to create a local branch which is detached
from the current history. In git switch, it always resets to the empty
tree, and thus the only completion we can provide is a branch name.
Follow the same rules for -c/-C (and -b/-B) when completing the argument
to --orphan.

In the case of git switch, after we complete the argument, there is
nothing more we can complete for git switch, so do not even try. Nothing
else would be valid.

In the case of git checkout, --orphan takes a start point which it uses
to determine the checked out tree, even though it created orphaned
history.

Update the previously added test cases as they are now passing.

Signed-off-by: Jacob Keller <jacob.keller@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jacob Keller
2020-05-28 11:10:48 -07:00
committed by Junio C Hamano
parent acb658fe7d
commit 91439928ec
2 changed files with 17 additions and 13 deletions
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21
contrib/completion/git-completion.bash
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@ -1508,7 +1508,7 @@ _git_checkout ()
local prevword prevword="${words[cword-1]}"
case "$prevword" in
-b|-B)
-b|-B|--orphan)
# Complete local branches (and DWIM branch
# remote branch names) for an option argument
# specifying a new branch name. This is for
@ -1522,14 +1522,14 @@ _git_checkout ()
esac
# At this point, we've already handled special completion for
# the arguments to -b/-B. There are 3 main things left we can
# possibly complete:
# 1) a start-point for -b/-B or -d/--detach
# the arguments to -b/-B, and --orphan. There are 3 main
# things left we can possibly complete:
# 1) a start-point for -b/-B, -d/--detach, or --orphan
# 2) a remote head, for --track
# 3) an arbitrary reference, possibly including DWIM names
#
if [ -n "$(__git_find_on_cmdline "-b -B -d --detach")" ]; then
if [ -n "$(__git_find_on_cmdline "-b -B -d --detach --orphan")" ]; then
__git_complete_refs --mode="refs"
elif [ -n "$(__git_find_on_cmdline "--track")" ]; then
__git_complete_refs --mode="remote-heads"
@ -2387,7 +2387,7 @@ _git_switch ()
local prevword prevword="${words[cword-1]}"
case "$prevword" in
-c|-C)
-c|-C|--orphan)
# Complete local branches (and DWIM branch
# remote branch names) for an option argument
# specifying a new branch name. This is for
@ -2400,8 +2400,15 @@ _git_switch ()
;;
esac
# Unlike in git checkout, git switch --orphan does not take
# a start point. Thus we really have nothing to complete after
# the branch name.
if [ -n "$(__git_find_on_cmdline "--orphan")" ]; then
return
fi
# At this point, we've already handled special completion for
# -c/-C. There are 3 main things left to
# -c/-C, and --orphan. There are 3 main things left to
# complete:
# 1) a start-point for -c/-C or -d/--detach
# 2) a remote head, for --track