From 35ff1076f33be77599442820f631215f8e069596 Mon Sep 17 00:00:00 2001
From: Darren Schroeder <343840+fdncred@users.noreply.github.com>
Date: Mon, 7 Mar 2022 16:39:16 -0600
Subject: [PATCH] add ansi escape (#4772)

* add ansi escape

* also add the ability to escape parens

* add a few more escapes that could be problematic for the nushell lang
---
 crates/nu-parser/src/parser.rs | 44 ++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/crates/nu-parser/src/parser.rs b/crates/nu-parser/src/parser.rs
index 607637cbb8..b758650f54 100644
--- a/crates/nu-parser/src/parser.rs
+++ b/crates/nu-parser/src/parser.rs
@@ -2168,10 +2168,54 @@ pub fn unescape_string(bytes: &[u8], span: Span) -> (Vec<u8>, Option<ParseError>
                     output.push(b'/');
                     idx += 1;
                 }
+                Some(b'(') => {
+                    output.push(b'(');
+                    idx += 1;
+                }
+                Some(b')') => {
+                    output.push(b')');
+                    idx += 1;
+                }
+                Some(b'{') => {
+                    output.push(b'{');
+                    idx += 1;
+                }
+                Some(b'}') => {
+                    output.push(b'}');
+                    idx += 1;
+                }
+                Some(b'$') => {
+                    output.push(b'$');
+                    idx += 1;
+                }
+                Some(b'^') => {
+                    output.push(b'^');
+                    idx += 1;
+                }
+                Some(b'#') => {
+                    output.push(b'#');
+                    idx += 1;
+                }
+                Some(b'|') => {
+                    output.push(b'|');
+                    idx += 1;
+                }
+                Some(b'~') => {
+                    output.push(b'~');
+                    idx += 1;
+                }
+                Some(b'a') => {
+                    output.push(0x7);
+                    idx += 1;
+                }
                 Some(b'b') => {
                     output.push(0x8);
                     idx += 1;
                 }
+                Some(b'e') => {
+                    output.push(0x1b);
+                    idx += 1;
+                }
                 Some(b'f') => {
                     output.push(0xc);
                     idx += 1;