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Re: Why is TAB-completion in shell not working for some commands?

From: Andreas Röhler
Subject: Re: Why is TAB-completion in shell not working for some commands?
Date: Wed, 09 Nov 2011 07:43:13 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; de; rv: Gecko/20110920 SUSE/3.1.15 Thunderbird/3.1.15

Am 08.11.2011 20:34, schrieb Marius Hofert:

I have a strange problem with OS: Mac OS X 10.7.2 and Emacs: GNU Emacs

If I open a shell with M-x shell, I can TAB-complete several commands, such as 
ps2pdf and many others. However, I can't seem to TAB-complete all commands. One 
exception is a2ps. I installed it, it works perfectly fine, I can TAB-complete 
it from the Mac's terminal, however, I can't TAB-complete it from the shell 
opened with M-x shell. The simple question is: Why?

Note that if I type "echo $PATH", I get:
a) from the Mac's terminal:
b) from the emacs shell:
=>  exactly the same.

If I type "which a2ps" from the emacs shell, I get: /opt/local/bin/a2ps so the 
correct place is found, but why is there no TAB-completion?



AFAIU it might matter, wherefrom you open the shell. It may or will have it's own (minor-)mode, where TAB completion is provided or not. In different available python-shells for example, TAB completion might be performed by different functions.

Call M-x describe-mode from inside shell, to get info which mode is behind, which keys are set etc,



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