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I'm on a roll today, here's another question:

How come when I put these into .inputrc, they both do the same thing?

TAB: menu-complete
Shift-TAB: menu-complete-reverse

i.e. they both do whatever the last one says.

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1 Answer 1

up vote 6 down vote accepted

Readline doesn't know anything about a modifier called Shift, and quietly ignores unknown modifier names. Try wibble-TAB.

To bind an action to Shift+Tab, you need to find out what escape sequence your terminal sends. In bash, run cat and type Ctrl+V then Shift+Tab. This will insert the escape sequence literally. It's likely that the first character will be an escape character, shown as ^[; different terminals have different escape sequences, but common possibilities are ␛[Z (i.e. escape, left bracket, capital Z) and ␛␉ (i.e. escape, tab). Bind the key appropriately in ~/.inputrc (where \e means an escape character).

"\e\t": menu-complete-reverse
"\e[Z": menu-complete-reverse
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Ah, ^[Z worked for me (BASH); thanks for the detailed answer! :) –  Mehrdad Jul 19 '11 at 22:17
    
Do you press Enter before or after 'cat'? Why is 'cat' needed? I seem to get the same escape sequences without 'cat'. –  douglas.kramer Nov 5 at 18:14
    
@douglas.kramer Running cat avoids any bash binding. Usually bash has the same Ctrl+V binding to insert the next character literally so it doesn't make a difference. –  Gilles Nov 5 at 18:20
    
I'm having trouble getting Shift+Tab to bind to 'shell-expand-command'. I get: $ cat <Enter> <Shift+Tab> which displays ^[[Z Do I always add \e ahead of the sequence I get from Ctrl+V? Does this translate to: "\e^[[Z": shell-expand-command –  douglas.kramer Nov 5 at 18:34
    
@dou Replace ^[ by `\e` –  Gilles Nov 5 at 20:03

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