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parser: Fix backquote support in here-document EOF mark

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Upstream commit:

    Author: Herbert Xu <herbert@gondor.apana.org.au>
    Date:   Thu Mar 15 18:27:30 2018 +0800
    parser: Fix backquote support in here-document EOF mark

    Currently using backquotes in a here-document EOF mark is broken
    because dash tries to do command substitution on it.  This patch
    fixes it by checking whether we're looking for an EOF mark during
    tokenisation.

    Reported-by: Harald van Dijk <harald@gigawatt.nl>
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

With added fix for quoted-ness of the EOF mark.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2018-04-01 16:38:32 +02:00
parent 1e5111b0f8
commit 41fddb4372
5 changed files with 36 additions and 0 deletions
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5
shell/ash_test/ash-heredoc/heredoc_backquote1.right Normal file
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@@ -0,0 +1,5 @@
heredoc1
Ok1:0
heredoc2
EO`false`F
Ok2:0

10
shell/ash_test/ash-heredoc/heredoc_backquote1.tests Executable file
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@@ -0,0 +1,10 @@
cat <<EO`true`F
heredoc1
EO`true`F
echo Ok1:$?
cat <<EO`true`F
heredoc2
EO`false`F
EO`true`F
echo Ok2:$?