Bug 280331 – app-shells/bash: tab completion adds too many '\' when command path begins with '~'

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description no_return_address 2009-08-04 16:05:14 UTC]

Under certain conditions I don't understand, when a folder name requires a '\' to escape part of it's name, and it is accessed with a pathname beginning with '~' to reference the home folder, tab completion will first correctly use the '\' to escape the special character, but pressing tab a second time will cause it to escape the '\' it created, then re-escape the special character, so that there are three '\' in a row.


Reproducible: Always

Steps to Reproduce:
1. Make a directory in your home folder called 'Awesome Z80' (something about that particular folder name seems to cause the most trouble)
2. Type '~/Awe' and then press tab.  Autocompletion will work as it should.
3. Press 'tab' one more time.

Actual Results:  
Assuming the folder name meets requirements I cannot determine, the '\' will be tripled, resulting in a non-functional file name.

Expected Results:  
Nothing about the file name should change for the second press of 'tab', instead I should see a listing of possible further completions.

I've tried many different directory names, but nothing seems to trigger the problem like "Awesome Z80" does.  I even tried creating another "Awesome Z80" in a subfolder to rule out the possibility that the problem is just that particular directory, and the problem occured with it as well.

Other directory names with spaces will sort of work, but only if you tab complete after typing '\ ' (with the space after the '\') but before finishing the directory name, whereas with "Awesome Z80" the problem occurs even when you tab complete before typing any '\' characters.

I am currently using app-shells/bash-3.2_p39 and sys-libs/readline-5.2_p13.

[Comment 1 no_return_address 2009-08-04 16:06:22 UTC]

Created attachment 200163 [details]
emerge --info

[Comment 2 no_return_address 2009-08-07 22:03:53 UTC]

It seems tab completion has another likely related problem:

I have an executable in my path named "FT245R Discovery"

If I type just "FT" and press tab, it correctly expands to "FT245R\ Discovery ", but if I type "FT245R\ Disc" and press tab, nothing happens.

It also works just fine if I go to the directory it is in and type "./FT245R\ Disc".

[Comment 3 SpanKY 2009-08-14 04:36:47 UTC]

we really arent looking at bash-3 bugs anymore since we're looking at stabilizing bash-4

the issue doesnt seem to exist for me

make sure you arent using bash-completion, custom inputrc stuff, set your PS1 to something like "/ ", and try setting your locale to something simple like LC_ALL=C

[Comment 4 SpanKY 2011-01-22 00:32:49 UTC]

bash-4.1 is stable