Add support for JSON sequence MIME type

Per draft-ietf-json-text-sequence-07 (which soon will be published as an
RFC).

tests/run

@@ -78,6 +78,46 @@ case "$v" in
 *) true;;
 esac
 
+## Test JSON sequence support
+
+cat > $d/expected <<EOF
+ignoring parse error: Potentially truncated top-level numeric value at line 1, column 2
+ignoring parse error: Truncated value at line 2, column 5
+ignoring parse error: Truncated value at line 2, column 25
+ignoring parse error: Truncated value at line 2, column 41
+EOF
+printf '1\0362 3\n[0,1\036[4,5]true"ab"{"c":4\036{}{"d":5,"e":6"\036false\n'|$VALGRIND $Q ./jq -ces --seq '. == [2,3,[4,5],true,"ab",{},false]' > /dev/null 2> $d/out
+cmp $d/out $d/expected
+
+cat > $d/expected <<EOF
+ignoring parse error: Potentially truncated top-level numeric value at line 1, column 2
+ignoring parse error: Truncated value at line 2, column 5
+ignoring parse error: Truncated value at line 2, column 25
+ignoring parse error: Invalid literal at line 3, column 1
+EOF
+printf '1\0362 3\n[0,1\036[4,5]true"ab"{"c":4\036{}{"d":5,"e":6"false\n\036null'|$VALGRIND $Q ./jq -ces --seq '. == [2,3,[4,5],true,"ab",{},null]' > /dev/null 2> $d/out
+cmp $d/out $d/expected
+
+# Note that here jq sees no inputs at all but it still succeeds because
+# --seq ignores parse errors
+cat > $d/expected <<EOF
+ignoring parse error: Unfinished string
+EOF
+printf '"foo'|./jq -ce --seq . > $d/out 2>&1
+cmp $d/out $d/expected
+
+# Numeric values truncated by EOF are ignored
+cat > $d/expected <<EOF
+ignoring parse error: Potentially truncated top-level numeric value
+EOF
+printf '1'|./jq -ce --seq . > $d/out 2>&1
+cmp $d/out $d/expected
+
+cat > $d/expected <<EOF
+EOF
+printf '1\n'|./jq -ces --seq '. == [1]' >/dev/null 2> $d/out
+cmp $d/out $d/expected
+
 ## Test library/module system
 
 mods=$PWD/tests/modules