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Date:	Wed, 09 Jan 2008 07:25:00 -0700
From:	Eric Blake <ebb9 AT byu DOT net>
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To:	cygwin AT cygwin DOT com, jmandawg AT hotmail DOT com
Subject:	Re: need help with bash -c <command> with cygpath
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According to Jay on 1/9/2008 7:13 AM:
|> Whoa - it seldom makes sense to use -i and -c simultaneously - what good
|
| What i'm actually trying to do is have a right-click menu in windows so that
| when i right click on a file i can choose head from the context menu, and it
| will send the top 10 lines of the file to vim.  I have gvim (windows
version)
| aliased in my .bashrc so that's why i'm using the -i switch.

That's still somewhat wasteful, starting bash just to get a vim alias -
why not use the full name gvim, and bypass the bash process to begin with?

|
| What i have done is created the following registry key:
| [HKEY_CLASSES_ROOT\*\shell\Head\Command]
| with the (default) value set to:
| C:\CYGWIN\bin\bash -i -c "head $(cygpath -a '%1') | vim -R -"

Why didn't you say so in the first place?  Windows registry quoting rules
are different than bash quoting rules.  And now you are getting into the
realm of cygwin applicability.  You may be interested in examining how the
cygwin package chere solves this same sort of problem.

Your biggest problem is that you want a single argument passed to -c, but
which contains proper quoting rules for bash.  In isolation, you want the
above command to look like:

bash -c 'head "$(cygpath -a '%1')" | vim -R -'

So now you have to figure out the escape sequences to get

'head "$(cygpath -a '%1')"'

stored into the registry - probably something like (untested):

"'head ""$(cygpath -a '%1')""'

or

"'head \"$(cygpath -a '%1')\"'

| Maybe i have the quotes messed up, or maybe i'm going about doing this
all wrong.

It's all in the quoting.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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