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Increase shcomp bytecode header version; doc updates

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src/cmd/ksh93/include/version.h:
- Centrally define the 93u+m copyright (SH_RELEASE_CPYR) for adding
  to the original AT&T copyright in 'ksh --man' and 'shcomp --man'.
- Centrally define the binary header version number for bytecode
  generated by shcomp: SHCOMP_HDR_VERSION.
- Bump SHCOMP_HDR_VERSION from 3 to 4. Converting all the preset
  aliases to builtin commands has caused new bytecode to be
  incompatible with old ksh. (However, old bytecode runs fine on
  93u+m, because shcomp pre-expands the preset aliases.)

src/cmd/ksh93/sh/shcomp.c:
- Instead of keeping its own version date (not changed since 2003),
  use the same version string as ksh itself (SH_RELEASE).
- Use SH_RELEASE_CPYR for the extra 93u+m copyright string.
- Use SHCOMP_HDR_VERSION for the bytecode header.

src/cmd/ksh93/sh/parse.c: sh_parse():
- Use SHCOMP_HDR_VERSION for the bytecode version check.

src/cmd/ksh93/data/builtins.c: opt_ksh[]:
- Use SH_RELEASE_CPYR for the extra 93u+m copyright string.

src/cmd/ksh93/COMPATIBILITY:
- Mention that 93u+m shcomp bytecode won't run on older ksh.
- Document changes in printf %T (re: 9526b3fa).

src/cmd/ksh93/README:
- Mention that we run on UnixWare (with major regressions).
  https://github.com/ksh93/ksh/pull/159#issuecomment-764667929
This commit is contained in:
Martijn Dekker 2021-01-21 14:15:30 +00:00
parent 9f43f8d10b
commit 7fdeadd4f1
6 changed files with 40 additions and 16 deletions
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src/cmd/ksh93/README
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@ -182,6 +182,7 @@ failures (crashes, and/or essential functionality does not work).
** OpenBSD on x86_64
* Solaris 11.4 (gcc) on x86_64
Solaris 11.4 (Solaris Studio 12.5 cc) on x86_64
*** UnixWare 7.1.4 on x86
*** Windows 7 using Cygwin on x86
Good luck!!