Remove no longer used functions.

[woblerr]

It is enough to use __pgbackrest_command_options_values function.

See pgbackrest/pgbackrest#2638

[Copilot]

Pull Request Overview

This PR streamlines option value completions by removing specialized helper functions and relying on the generic __pgbackrest_command_options_values for most commands.

• Removed unused functions for --output (verify, version) and --type (info) option values.
• Introduced __pgbackrest_command_options_values_output_repo_ls for repo-ls only.
• Updated --output case branches in two parsing blocks to use the new generic and repo-ls functions.

Comments suppressed due to low confidence (3)

pgbackrest-completion.sh:161

• By removing the specialized verify and version branches for --output, the completion values for those commands now fall back to the generic helper. Please confirm that __pgbackrest_command_options_values returns the correct output options for verify and version or reintroduce specialized case handling if needed.

                            case ${COMP_WORDS[1]} in

pgbackrest-completion.sh:162

• [nitpick] The --output handling logic is duplicated in two locations. Consider extracting this case block into a helper function to reduce duplication and simplify future updates.

                                repo-ls)

pgbackrest-completion.sh:27

• It’s safer to quote the variable in the echo (echo "${command_options_values}") to prevent word-splitting and preserve values containing spaces.

    echo ${command_options_values}