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Fix lexing of 'case' in do...done in a $(comsub) (rhbz#1241013)

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The following caused a spurious syntax error:

$ x=$(for i in 1; do case $i in word) true;; esac; done)
-ksh: syntax error: `;;' unexpected

Prior discussion:
https://bugzilla.redhat.com/1241013

Original patch, backported from 93v- beta, applied without change:
642af4d6/f/ksh-20120801-parserfix.patch
This commit is contained in:
Martijn Dekker 2020-09-27 21:26:09 +02:00
parent bb15f7fb19
commit bd283959be
4 changed files with 27 additions and 1 deletions
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9
src/cmd/ksh93/tests/basic.sh
View file

@ -716,5 +716,14 @@ else err_exit "warning: skipping argv rewrite test due to noncompliant 'ps' util
let Errors--
fi
# ======
# https://bugzilla.redhat.com/1241013
got=$(eval 'x=$(for i in test; do case $i in test) true;; esac; done)' 2>&1) \
|| err_exit "case in a for loop inside a \$(comsub) caused syntax error (got $(printf %q "$got"))"
got=$(eval 'x=${ for i in test; do case $i in test) true;; esac; done; }' 2>&1) \
|| err_exit "case in a for loop inside a \${ comsub; } caused syntax error (got $(printf %q "$got"))"
got=$(eval 'x=`for i in test; do case $i in test) true;; esac; done`' 2>&1) \
|| err_exit "case in a for loop inside a \`comsub\` caused syntax error (got $(printf %q "$got"))"
# ======
exit $((Errors<125?Errors:125))