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expander notes:
o expander.tcl is an objectified version of the expansion algorithm
used in expand and Spinster. Goals
- Multiple expanders can be used at one time
- Handling of batch or incremental input
- Support for user-settable brackets
- Support for context stack.
o Next: add and test incremental expansion.
Things done: 11/23/2001
x Added the evalcmd command; this allows the application to specify
a different means of evaluating macros than the default "uplevel
#0".
Things done: 11/3/2001
x Added a couple of more tests for the nested expander problem I
fixed the other day.
x Finished the man page for the current version.
x Time to zip it up and send it off to Andreas.
Things done: 10/31/2001
x Updated the list of possible error modes to match the list in
Expand 2.1
x Added tests for each of the error modes to expander.test.
x Created a modified version of Expand 2.1 that uses expander; it
was able to process the Ex Libris website without error.
x Found an error: if an expander is used to expand text which
contains a call to another expander, the two get confused--because
of the "::expander::This" variable.
- It works for the recordkeeper, because a recordkeeper method
can never execute a method for a different recordkeeper.
- What if Methods saved the old This, and restored it at the
end?
- Tried it; it works! All existing tests pass.
Things done: 10/30/2001
x Wrote more tests; found and fixed bracket restoration bug in expander.
Things done: 10/25/2001
x Wrote tests for the lb, rb, and errmode commands.
x Added the reset command.
x Wrote tests for the reset command.
x Added the context stack commands, and wrote tests for them.
Things done: 10/24/2001
x Copied recordkeeper code and docs as a template.
x Implemented the lb, rb, and errmode accessor methods.
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