::  Walk through all docs and transform any that are not .txt, .pdf or .html to .txt
echo   Setting .txt filetype to ascii docs.
for /R %FB_OUTPUT_DIR%\doc %%v in (.) do (
  pushd %%v
  for /F %%W in ( 'dir /B /A-D' ) do (
    if /I "%%~xW" NEQ ".txt" (
      if /I "%%~xW" NEQ ".pdf" (
        if /I "%%~xW" NEQ ".htm" (
          if /I "%%~xW" NEQ ".html" (
            ren %%W %%W.txt
          )
        )
      )
    )
  )
  popd
)

dir /b
README.aggregate_tracking
README.autonomous_transactions.txt
README.builtin_functions.txt
README.case
README.coalesce
README.column_type_psql.txt
README.common_table_expressions
README.context_variables
README.context_variables2
README.current_time
README.cursors
README.data_types
README.data_type_results_of_aggregations.txt
README.db_triggers.txt
README.ddl.txt
README.default_parameters
README.derived_tables.txt
README.distinct
README.domains_psql.txt
README.exception_handling
README.execute_block
README.execute_statement
README.execute_statement2
README.explicit_locks
README.expression_indices
README.global_temporary_tables
README.hex_literals.txt
README.iif
README.isc_info_xxx
README.joins.txt
README.keywords
README.leave_labels
README.length
README.list
README.merge.txt
README.nullif
README.null_value
README.order_by_expressions_nulls
README.plan
README.PSQL_stack_trace.txt
README.returning
README.rows
README.savepoints
README.select_expressions
README.sequence_generators
README.set_transaction.txt
README.similar_to.txt
README.trim
README.universal_triggers
README.update_or_insert
README.user_management
README.view_updates