[Info-vax] ZIP, UNZIP and BACKUP/COMPARE reporting %BACKUP-E-VERIFYERR

[Volker Halle]

Slight correction:

I didn't use "-V" to preserve the file attributes in the above test,
so the restored file was in Stream_LF record format. But repeating the
test using "-V" shows the same results.

Volker.

AXPVMS $ zip "-V" test test.dat
  adding: TEST.DAT (stored 0%)
AXPVMS $ unzip "-V" test
Archive:  USERDISK1:[HALLE.TEST]TEST.ZIP;1
replace test.dat? [y]es, [n]o, [A]ll, [N]one, [r]ename: r
new name: test.dat_r
 extracting: USERDISK1:<HALLE.TEST>TEST.DAT_R;
AXPVMS $ dump test.dat_r
...
Virtual block number 1 (00000001), 512 (0200) bytes

 00000000 00000000 00000053 4D560003 ..VMS........... 000000
...

Now the unzipped file correctly has variable length record format -
the same as the original file.

AXPVMS $ diff test.dat test.dat_r
Number of difference sections found: 0
Number of difference records found: 0

DIFFERENCES /IGNORE=()/MERGED=1-
    USERDISK1:<HALLE.TEST>TEST.DAT;1-
    USERDISK1:<HALLE.TEST>TEST.DAT_R;1

AXPVMS $ backup/comp test.dat test.dat_r
%BACKUP-E-VERIFYERR, verification error for block 1 of USERDISK1:
[HALLE.TEST]TEST.DAT_R;1