#828 7-Zip can't recognize all archives supported by LHA

[Anonymous]

When 7-Zip tries to extract LZH archives compressed with -lh1-, -lh2-, -lh3-, -lzs-, -lz5- methods, it says the compression method is unsupported, even though all LHA's compression methods (that includes LArc, PMarc) are derived from the same basic compression schemes with minimal changes in parameters. In fact, LHA is able to extract LArc archives. The LHA handling routines need to be updated to include other LHA, LArc, PMarc compression settings. Most of the features can be founed in UNLHA32 library.[1]

[1] http://www2.nsknet.or.jp/~micco/micindex.html

[Nobody/Anonymous]

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UNLHA32 library does not seem to support PMarc compression methods (-pm1-, -pm2-, -pms-) either.
Do you know of any description of the algorithm or source codes?

[Nobody/Anonymous]

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UNLHA32 library does not seem to support PMarc compression methods (-pm1-, -pm2-, -pms-) either.
Do you know of any description of the algorithm or source codes?

[quanta]

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Info on PMarc formats can be found in the Ultimate MSX FAQ, which also hosts source for generic PMA/LMA extractor:
http://www.faq.msxnet.org/suffix.html