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From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Sat, 14 May 2011 14:19:30 +0000 (UTC)
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Subject: svn commit: r221887 - head/tools/regression/bin/sh/parser
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Author: jilles
Date: Sat May 14 14:19:30 2011
New Revision: 221887
URL: http://svn.freebsd.org/changeset/base/221887

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

Added:
  head/tools/regression/bin/sh/parser/heredoc10.0   (contents, props changed)
  head/tools/regression/bin/sh/parser/heredoc9.0   (contents, props changed)

Added: head/tools/regression/bin/sh/parser/heredoc10.0
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ head/tools/regression/bin/sh/parser/heredoc10.0	Sat May 14 14:19:30 2011	(r221887)
@@ -0,0 +1,49 @@
+# $FreeBSD$
+
+# 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))

Added: head/tools/regression/bin/sh/parser/heredoc9.0
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ head/tools/regression/bin/sh/parser/heredoc9.0	Sat May 14 14:19:30 2011	(r221887)
@@ -0,0 +1,58 @@
+# $FreeBSD$
+
+# 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))