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Fix remaining bug in ${var:-'{}'} (re: d087b031)

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The following problems remained:

$ var=x; echo ${var:-'{}'}
x}
$ var=; echo ${var:+'{}'}
}

src/cmd/ksh93/sh/macro.c: varsub():
- Use the new ST_MOD1 state table to skip over ${var-'foo'}, etc.
  instead of ST_QUOTE. In ST_MOD1 the ' is categorised as S_LIT
  which causes the single quotes to be skipped over correctly.
  See d087b031 for more info.

src/cmd/ksh93/tests/quoting2.sh:
- Add tests for this remaining bug.
- Make the new test xtrace-proof.

Resolves: https://github.com/ksh93/ksh/issues/290 (again)
This commit is contained in:
Martijn Dekker 2021-05-03 02:59:09 +01:00
parent 1aec9b06dd
commit f31e368795
4 changed files with 25 additions and 4 deletions
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2
src/cmd/ksh93/include/version.h
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@ -21,7 +21,7 @@
#define SH_RELEASE_FORK "93u+m" /* only change if you develop a new ksh93 fork */
#define SH_RELEASE_SVER "1.0.0-alpha" /* semantic version number: https://semver.org */
#define SH_RELEASE_DATE "2021-04-30" /* must be in this format for $((.sh.version)) */
#define SH_RELEASE_DATE "2021-05-03" /* must be in this format for $((.sh.version)) */
#define SH_RELEASE_CPYR "(c) 2020-2021 Contributors to ksh " SH_RELEASE_FORK
/* Scripts sometimes field-split ${.sh.version}, so don't change amount of whitespace. */