[Bash-completion-devel] [PATCH] Bug#559953: COMP_WORDS: bad array subscript

[Igor Murzov]

> This message also appears when you press tab with the cursor at the
> beginning of certain commands.
> To reproduce this write "dpkg" move cursor above "d" and hit tab, this one
> is specially annoying since message is repeated until you press ctrl-c
> This happens a lot to me when I use reverse-i-search (ctrl-r) and I press
> tab by mistake
> similar behavior with ls, cp, grep, ssh, man, uname, chown...

In this case $cword equals to zero and _init_completion tries to put 
${words[cword-1]} into prev, At this point out of bounds access occurs.


-- Igor
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