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This is a port of btoa version 5.2, written by Paul Rutter, Joe
Orost & Stefan Parmark. btoa converts 4 binary characters to 5
ascii ones, causing a 25% expansion. (btoa is thus more efficient
than uuencode, which causes a 33% expansion.) Spaces will not be
used, which should make it safe to send files over e-mail or Usenet
without risking that blanks become tabs. Each resulting row of
text has a single-byte checksum for error detection. A diagnosis
file provides a list of errors found this way, which could then be
used to retransmit only the failing lines.
Patch 1 is an unofficial, non-platform-specific patch to version
5.2 of btoa. It allows for automatic decoding of btoa files if
the program is invoked as "atob" (no -a argument necessary). It
also outfits the Makefile to do clean and install.
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