[PATCH v2 0/2] sparse checkout: custom bash completion updates

This series is based on en/sparse-checkout-set. It updates custom tab completion for the sparse-checkout command. Specifically, it corrects the following issues with the current method:

 1. git sparse-checkout <TAB> results in an incomplete list of subcommands
    (it is missing reapply and add).
 2. git sparse-checkout --<TAB> does not complete the help option.
 3. Options for subcommands are not tab-completable.
 4. git sparse-checkout set <TAB> and git sparse-checkout add <TAB> show
    both file names and directory names.

The first commit in this series is a set of failing tests that highlight each of the above issues. The next commit updates the _git_sparse_checkout method in git-completion.bash to enable each of these tests to pass.

Changes since V1 ================

 * Rebase onto en/sparse-checkout-set.
 * Add subcommand options (including --no-cone) for set and reapply.
 * Extend 'sparse-checkout completes subcommand options' test to validate
   new set/reapply subcommand options.
 * No longer set index.sparse to false in 'sparse-checkout completes
   directory names' test.

Thanks, Lessley

Lessley Dennington (2):
  sparse-checkout: custom tab completion tests
  sparse-checkout: custom tab completion

 contrib/completion/git-completion.bash | 38 ++++++++----
 t/t9902-completion.sh                  | 85 ++++++++++++++++++++++++++
 2 files changed, 111 insertions(+), 12 deletions(-)

base-commit: dfac9b609f86cd4f6ce896df9e1172d2a02cde48
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1108%2Fldennington%2Fsparse-checkout-bash-completion-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1108/ldennington/sparse-checkout-bash-completion-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/1108

Range-diff vs v1:

 1:  a7f3ae5cdda ! 1:  955fcab0052 sparse-checkout: custom tab completion tests
     @@ t/t9902-completion.sh: test_expect_success 'git checkout - with --detach, comple
      +test_expect_failure 'sparse-checkout completes subcommand options' '
      +	test_completion "git sparse-checkout init --" <<-\EOF &&
      +	--cone Z
     ++	--no-cone Z
      +	--sparse-index Z
      +	--no-sparse-index Z
      +	EOF
      +
      +	test_completion "git sparse-checkout set --" <<-\EOF &&
     ++	--cone Z
     ++	--no-cone Z
     ++	--sparse-index Z
     ++	--no-sparse-index Z
      +	--stdin Z
      +	EOF
      +
     ++	test_completion "git sparse-checkout reapply --" <<-\EOF &&
     ++	--cone Z
     ++	--no-cone Z
     ++	--sparse-index Z
     ++	--no-sparse-index Z
     ++	EOF
     ++
      +	test_completion "git sparse-checkout add --" <<-\EOF
      +	--stdin Z
      +	EOF
     @@ t/t9902-completion.sh: test_expect_success 'git checkout - with --detach, comple
      +	) &&
      +
      +	# initialize sparse-checkout definitions
     -+	git -C sparse-checkout config index.sparse false &&
      +	git -C sparse-checkout sparse-checkout init --cone &&
      +	git -C sparse-checkout sparse-checkout set folder1/0 folder3 &&
      +
 2:  ab51236d18c ! 2:  cecf501e076 sparse-checkout: custom tab completion
     @@ contrib/completion/git-completion.bash: _git_show_branch ()
       	__git_complete_revlist
       }
       
     -+__git_sparse_checkout_init_opts="--cone --sparse-index --no-sparse-index"
     ++__git_sparse_checkout_subcommand_opts="--cone --no-cone --sparse-index --no-sparse-index"
      +
       _git_sparse_checkout ()
       {
     @@ contrib/completion/git-completion.bash: _git_show_branch ()
      -	*)
      -		;;
      +	case "$prev" in
     -+		init)
     -+			__gitcomp "$__git_sparse_checkout_init_opts"
     ++		set)
     ++			__gitcomp "$__git_sparse_checkout_subcommand_opts --stdin"
     ++			__gitcomp "$(git ls-tree -d -r HEAD --name-only)"
      +			;;
     -+		add|set)
     ++		add)
      +			__gitcomp "--stdin"
      +			__gitcomp "$(git ls-tree -d -r HEAD --name-only)"
      +			;;
     ++		init|reapply)
     ++			__gitcomp "$__git_sparse_checkout_subcommand_opts"
     ++			;;
      +		*)
      +			;;
       	esac
     @@ t/t9902-completion.sh: test_expect_failure 'sparse-checkout completes subcommand
      +test_expect_success 'sparse-checkout completes subcommand options' '
       	test_completion "git sparse-checkout init --" <<-\EOF &&
       	--cone Z
     - 	--sparse-index Z
     + 	--no-cone Z
      @@ t/t9902-completion.sh: test_expect_failure 'sparse-checkout completes subcommand options' '
       	EOF
       '