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sh: Add tests for lines that look like heredoc delimiters but are not.

Obtained-from:  FreeBSD 221887
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commit 2687e410aa76e380912c06270ee7ec72ede59c4f 1 parent 5824251
Peter Avalos authored
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49 tools/regression/bin/sh/parser/heredoc10.0
@@ -0,0 +1,49 @@
+# $FreeBSD: src/tools/regression/bin/sh/parser/heredoc10.0,v 1.1 2011/05/14 14:19:30 jilles Exp $
+
+# It may be argued that
+# x=$(cat <<EOF
+# foo
+# EOF)
+# is a valid complete command that sets x to foo, because
+# cat <<EOF
+# foo
+# EOF
+# is a valid script even without the final newline.
+# However, if the here-document is not within a new-style command substitution
+# or there are other constructs nested inside the command substitution that
+# need terminators, the delimiter at the start of a line followed by a close
+# parenthesis is clearly a literal part of the here-document.
+
+# This file contains tests that may not work with simplistic $(...) parsers.
+# The open parentheses in comments help mksh, but not zsh.
+
+failures=0
+
+check() {
+ if ! eval "[ $* ]"; then
+ echo "Failed: $*"
+ : $((failures += 1))
+ fi
+}
+
+check '"$(cat <<EOF # (
+EOF )
+EOF
+)" = "EOF )"'
+
+check '"$({ cat <<EOF # (
+EOF)
+EOF
+})" = "EOF)"'
+
+check '"$(if :; then cat <<EOF # (
+EOF)
+EOF
+fi)" = "EOF)"'
+
+check '"$( (cat <<EOF # (
+EOF)
+EOF
+))" = "EOF)"'
+
+exit $((failures != 0))
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58 tools/regression/bin/sh/parser/heredoc9.0
@@ -0,0 +1,58 @@
+# $FreeBSD: src/tools/regression/bin/sh/parser/heredoc9.0,v 1.1 2011/05/14 14:19:30 jilles Exp $
+
+# It may be argued that
+# x=$(cat <<EOF
+# foo
+# EOF)
+# is a valid complete command that sets x to foo, because
+# cat <<EOF
+# foo
+# EOF
+# is a valid script even without the final newline.
+# However, if the here-document is not within a new-style command substitution
+# or there are other constructs nested inside the command substitution that
+# need terminators, the delimiter at the start of a line followed by a close
+# parenthesis is clearly a literal part of the here-document.
+
+# This file contains tests that also work with simplistic $(...) parsers.
+
+failures=0
+
+check() {
+ if ! eval "[ $* ]"; then
+ echo "Failed: $*"
+ : $((failures += 1))
+ fi
+}
+
+check '`${SH} -c "cat <<EOF
+EOF)
+EOF
+"` = "EOF)"'
+
+check '`${SH} -c "(cat <<EOF
+EOF)
+EOF
+)"` = "EOF)"'
+
+check '"`cat <<EOF
+EOF x
+EOF
+`" = "EOF x"'
+
+check '"`cat <<EOF
+EOF )
+EOF
+`" = "EOF )"'
+
+check '"`cat <<EOF
+EOF)
+EOF
+`" = "EOF)"'
+
+check '"$(cat <<EOF
+EOF x
+EOF
+)" = "EOF x"'
+
+exit $((failures != 0))

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