hush: implement $'str' bashism

function                                             old     new   delta
parse_dollar_squote                                    -     441    +441
encode_then_expand_vararg                            359     380     +21
parse_stream                                        2252    2271     +19
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/0 up/down: 481/0)             Total: 481 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

6 files changed, 36 insertions, 0 deletions

diff --git a/shell/hush_test/hush-quoting/dollar_squote_bash1.right b/shell/hush_test/hush-quoting/dollar_squote_bash1.right
new file mode 100644
index 000000000..9f4e25efa
--- /dev/null
+++ b/shell/hush_test/hush-quoting/dollar_squote_bash1.right
@@ -0,0 +1,10 @@
+a       b
+$'a\tb'
+a
+b c
+def
+a'b c"d e\f
+a3b c3b e33f
+a\80b c08b
+a3b c30b
+x       y
diff --git a/shell/hush_test/hush-quoting/dollar_squote_bash1.tests b/shell/hush_test/hush-quoting/dollar_squote_bash1.tests
new file mode 100755
index 000000000..6fc411b93
--- /dev/null
+++ b/shell/hush_test/hush-quoting/dollar_squote_bash1.tests
@@ -0,0 +1,8 @@
+echo $'a\tb'
+echo "$'a\tb'"
+echo $'a\nb' $'c\nd''ef'
+echo $'a\'b' $'c\"d' $'e\\f'
+echo $'a\63b' $'c\063b' $'e\0633f'
+echo $'a\80b' $'c\608b'
+echo $'a\x33b' $'c\x330b'
+echo $'x\x9y'
diff --git a/shell/hush_test/hush-quoting/dollar_squote_bash2.right b/shell/hush_test/hush-quoting/dollar_squote_bash2.right
new file mode 100644
index 000000000..f7a1731dd
--- /dev/null
+++ b/shell/hush_test/hush-quoting/dollar_squote_bash2.right
@@ -0,0 +1,6 @@
+strstrstrstrstrstrstrstrstrstrstrstrstrstrstrstrstr
+strstrstrstrstrstrstrstrstrstrstrstrstrstrstrstrstr
+80:\�
+81:\�
+82:\�
+Done:0
diff --git a/shell/hush_test/hush-quoting/dollar_squote_bash2.tests b/shell/hush_test/hush-quoting/dollar_squote_bash2.tests
new file mode 100755
index 000000000..449772813
--- /dev/null
+++ b/shell/hush_test/hush-quoting/dollar_squote_bash2.tests
@@ -0,0 +1,10 @@
+# Embedded NULs
+echo $'str\x00'strstrstrstrstrstrstrstrstrstrstrstrstrstrstrstr
+echo $'str\000'strstrstrstrstrstrstrstrstrstrstrstrstrstrstrstr
+
+# The chars after '\' are hex 0x80,81,82...
+echo 80:$'\�'
+echo 81:$'\�'
+echo 82:$'\�'
+
+echo Done:$?
diff --git a/shell/hush_test/hush-vars/var_bash7.right b/shell/hush_test/hush-vars/var_bash7.right
new file mode 100644
index 000000000..223b7836f
--- /dev/null
+++ b/shell/hush_test/hush-vars/var_bash7.right
@@ -0,0 +1 @@
+B
diff --git a/shell/hush_test/hush-vars/var_bash7.tests b/shell/hush_test/hush-vars/var_bash7.tests
new file mode 100755
index 000000000..c4ce03f7f
--- /dev/null
+++ b/shell/hush_test/hush-vars/var_bash7.tests
@@ -0,0 +1 @@
+x=AB; echo "${x#$'\x41'}"