progcomp_alias not working with some commands (tree)

[Jai-JAP]

$ ble summary
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu) [Arch Linux]
ble.sh, version 0.4.0-devel4+b99cadb4 (noarch) [git 2.53.0, GNU Make 4.4.1, GNU Awk 5.4.0, API 4.1, PMA Avon 8-g1, (GNU MPFR 4.2.2, GNU MP 6.3.0)]
bash-completion, version 2.17.0 (hash:480ffcc6a751e55621ec526eb5dea7a0d86d9e72, 17877 bytes) (noarch)
fzf key-bindings, (hash:a65d2ad5aab9690911b27b3b1431cf09f75913e3, 1060674 bytes) (noarch) (integration: on)
fzf completion, (hash:a65d2ad5aab9690911b27b3b1431cf09f75913e3, 1060674 bytes) (noarch) (integration: on)
locale: LANG=en_US.UTF-8
terminal: TERM=xterm-256color wcwidth=16.0-west/16.0-2+ri, wt:0 (0;10;1)
options: +noclobber +autocd +cdspell +dirspell +extglob +histappend -hostcomplete +inherit_errexit +login_shell +no_empty_cmd_completion +progcomp_alias```

I have the tree command aliased as

alias tree='eza -ghoMT --smart-group --git --no-time --no-permissions --group-directories-first --hyperlink --no-quotes -I .git --icons'

Having the progcomp_alias option set, and clearing tree completions using complete -r tree the tab completions still resolve to the original tree commands. Not sure whether this is specific to this command, havent observed with anything else I use.

=> complete -p tree
-bash: complete: tree: no completion specification

=> tree -bash:^C
 
=> complete -p tree
complete -F _comp_cmd_tree tree

The tree -bash: arg is autocompleted when i use tree -<TAB> instead of showing me options from eza

[akinomyoga]

This is an intentional behavior, which is explained in #561 (comment). In short, it is impossible to tell whether a completion file is prepared for the alias or the command hidden by the alias. ble.sh assumes the former.

[akinomyoga]

For a completion file for the command overridden by the alias not to affect pgocomp_alias, one needs to disable the completion file somehow.

• In the case where the default completion is directly defined in bash-completion's main file, one could have removed the setting for the overridden command by complete -r <cmd> as I explained in Inconsistent completions decorations #633 (reply in thread). However, the tree completion is provided as a separate file that is intended to be automatically loaded, which is a problem.
• One solution is to remove the file, but one doesn't want to modify the files that are installed as part of the system packages.
• Another possibility is to introduce in bash-completion a mechanism to allow the user to disable a specific completion setting in the same way as I explained in feat: support the startup{,-core} directory scop/bash-completion#1558 (comment). However, this requires the modification to bash-completion itself.