feat: symbol display

Cargo.lock

@@ -17,6 +17,15 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.82"
@@ -189,7 +198,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "976dd42dc7e85965fe702eb8164f21f450704bdde31faefd6471dba214cb594e"
 dependencies = [
  "libc",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -206,7 +215,7 @@ checksum = "0ce92ff622d6dadf7349484f42c93271a0d49b7cc4d466a936405bacbe10aa78"
 dependencies = [
  "cfg-if",
  "rustix",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -340,6 +349,7 @@ dependencies = [
  "itertools",
  "once_cell",
  "rayon",
+ "regex",
  "rnix",
  "rpds",
  "rustyline",
@@ -457,6 +467,35 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
+
 [[package]]
 name = "rnix"
 version = "0.11.0"
@@ -510,7 +549,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]

Cargo.toml

@@ -19,5 +19,6 @@ derive_more = { version = "2.0", features = [ "full" ] }
 crossbeam-channel = "0.5"
 ecow = "0.2"
 once_cell = "1.19"
+regex = "1.11"
 
 rustyline = "15.0"

src/ty/common.rs

@@ -3,6 +3,7 @@ use std::ops::Deref;
 
 use derive_more::Constructor;
 use ecow::EcoString;
+use regex::Regex;
 
 #[derive(Clone, Debug, PartialEq, Constructor)]
 pub struct Catchable {
@@ -30,7 +31,17 @@ impl<T: Into<EcoString>> From<T> for Symbol {
 
 impl Display for Symbol {
     fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
-        write!(f, r#"Sym({})"#, self.0)
+        if self.normal() {
+            write!(f, r#""{}""#, self.0)
+        } else {
+            write!(f, "{}", self.0)
+        }
+    }
+}
+
+impl Symbol {
+    fn normal(&self) -> bool {
+        !Regex::new(r#"^[a-zA-Z\_][a-zA-Z0-9\_\'\-]*$"#).unwrap().is_match(self)
     }
 }