bash completion prevents backspace
I am trying to set up bash completion for a utility script I wrote, so I added the following script to /etc/bash_completion.d:
_mcd()
{
local cur words
COMPREPLY=()
cur="${COMP_WORDS[COMP_CWORD]}"
words=`mcd-completion-words`
COMPREPLY=( $(compgen -W "${words}" -- "$cur") )
return 0
}
complete -F _mcd mcd
The mcd-completion-words
script programmatically finds available operators for the command. When I restart bash (or source the script), I can successfully tab complete, but if I do so, I can no longer backspace past a completed character.
Also, if I attempt to list all options (e.g. I attempt to tab complete w/ no word in place), bash adds a tab to the command, which I also cannot backspace.
How can I make bash mimic normal file completion behavior? Any help is apprecia开发者_如何学Pythonted. Thanks!
Here's a reduced testcase for mcd-completion-words that still exhibits the same behavior. Curiously, Dennis' case works for me as well (when substituting in words="one two three", for example).
#!/usr/bin/env php
<?php
print "one two three four five six seven eight nine";
Here's a reduced test case; even an empty `php' command causes the erroneous completion behaviour:
$ _mcd() { php -r ""; COMPREPLY=( one ); }
$ complete -F _mcd mcd
$ mcd <TAB> # Becomes 'mcd one' all right
$ mcd one <BACKSPACE> # ERROR: doesn't work
This is on machine (Ubuntu) with both bash-3.2.48/bash-4.0.33 & php-5.2.6-3ubuntu4. On another machine (Debian) with bash-3.2.39 & php-5.2.6-1+lenny9, completion & backspace goes all right.
Using perl -e ""
instead of php -r ""
also goes all right.
Don't know what's going on, php conflicting with readline? Maybe you can try bug-bash mailing list?
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