[Bug]: issue with tab completion

[shahzebsiddiqui]

Bug Description

There is an issue with tab completion with some sub-commands especially when one uses top-level options like buildtest <option> <subcommand> then the bash completion doesn't work properly

Not working, bash completion showing top-level argument instead of options of bd

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest -d bd 
bc           build        cd           cg           config       debugreport  h            history      info         it           report       schema       stats        stylecheck   unittests                                     
bd           buildspec    cdash        clean        debug        docs         help         hy           inspect      path         rt           schemadocs   style        test                     

This is working

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest bd 
--buildspec               --executor-type           --module-purge            --procs                   --stage                   -b                        -m                        -x                                                
--disable-executor-check  --filter                  --modules                 --remove-stagedir         --tags                    -e                        -s                                                                        
--exclude                 --helpfilter              --nodes                   --rerun                   --timeout                 -et                       -t                                                                        
--executor                --maxpendtime             --pollinterval            --retry                   --unload-modules          -f                        -u                                                                        

Tab completion not working for buildtest cg executors, it is showing options for buildtest cg instead of the options for subcommand

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest cg executors
--help     -h         co         compilers  e          edit       ex         executors  p          path       systems    v          validate   view    

The tab completion for buildtest cg co is working however for subcommands like test it doesn't work after tab completion. Note that buildtest tab completion worked for buildtest cg co test which shows builtin_gcc however positional argument after the argument now shows the tab completion for parent command buildtest cg co

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest cg co find
--help     -h         co         compilers  e          edit       ex         executors  p          path       systems    v          validate   view     

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest cg co test builtin_gcc
--help     -h         co         compilers  e          edit       ex         executors  p          path       systems    v          validate   view   

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest cg co     
builtin_gcc

Tab completion for subcommands inside buildtest rt such as buildtest rt c, buildtest rt list or buildtest rt sm are not working it is showing tab completion for buildtest rt command such as one below

(buildtest)  ~/Documents/github/buildtest/ [fix_ci_issue_1257] buildtest rt c 
--color         --filter        --formatfields  --helpformat    --oldest        --row-count     -e              -n              -t              l               summary                                                   
--end           --filterfields  --help          --latest        --pager         --start         -f              -p              c               list                                                                    
--fail          --format        --helpfilter    --no-header     --pass          --terse         -h              -s              clear           sm            

Version

devel

Relevant log output

No response

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