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[Libguestfs] Note about guestfish escape sequences

I've pushed this patch in response to a user request to
make it easier to write newlines and other characters
in guestfish:


This lets you write:

  ><fs> write /file "this is a line\n"

and have it do what you'd expect.  (With current guestfish, this
writes backslash followed by 'n' and no newline into the file)

In theory this is a change to the behaviour of guestfish, _if_ you
were relying on the above to literally write backslash-<char>.  We
never documented it either way.

Note that the change only applies to double-quoted strings.  Single
quoted strings and unquoted strings are unaffected.


Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
New in Fedora 11: Fedora Windows cross-compiler. Compile Windows
programs, test, and build Windows installers. Over 70 libraries supprt'd
http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw

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