#204 inifile : allow keys with no assignment

[John Vella]

First off, the "Category" list is missing "inifile".

I'm attaching a patch to allow section keys that have no assigned value, not even an empty value which is done by doing "key=". This will allow a call to the ::get function to successfully return key "C" in the following example section:

[dummy]
A=first
B=
C

A simple example of where this enhancement comes into play is if you wanted to use a section to hold a simple list of names, for example a list of valid file suffixes:

[suffix_list]
.txt
.tcl
.cxx

The ::value function was modified to return the default value for keys that exist but have no assignment. This allows distinguishing the case where a key exists and is assigned an empty value versus a key that has no assignment.

I've updated the test to cover this new capability.

The patch was made against version 1.13 of ini.tcl and includes the following file updates:

ini.tcl
inifile.test
pkgIndex.tcl
test.ini

[John Vella]

patched code and test

[Andreas Kupries]

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Reassigned to author of inifile package.