fix(parser): Treat unquoted strings w/ trailing quotes as regular strings

crates/toml/tests/fixtures/invalid/ext/string/no-close-recovery-03.toml

@@ -0,0 +1,20 @@
+[package]
+name = "a_name"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+crate1 = { version = "0.1.0" }
+crate2 = { version = "1.0.0", features=[] }
+
+[patch.crates-io]
+crate3."path = "../somewhere"
+crate4."path = "/somewhere"
+crate5 = { "path = "../somewhere" }
+crate6 = { "path = "/somewhere" }
+
+[patch.crates-io.crate7]
+"path = "../somewhere"
+
+[patch.crates-io.crate8]
+"path = "/somewhere"

crates/toml/tests/snapshots/invalid/ext/string/no-close-recovery-03.stderr

@@ -0,0 +1,47 @@
+TOML parse error at line 11, column 30
+   |
+11 | crate3."path = "../somewhere"
+   |                              ^
+key with no value, expected `=`
+
+---
+TOML parse error at line 12, column 17
+   |
+12 | crate4."path = "/somewhere"
+   |                 ^
+key with no value, expected `=`
+
+---
+TOML parse error at line 14, column 21
+   |
+14 | crate6 = { "path = "/somewhere" }
+   |                     ^
+missing assignment between key-value pairs, expected `=`
+
+---
+TOML parse error at line 17, column 23
+   |
+17 | "path = "../somewhere"
+   |                       ^
+key with no value, expected `=`
+
+---
+TOML parse error at line 20, column 10
+   |
+20 | "path = "/somewhere"
+   |          ^
+key with no value, expected `=`
+
+---
+TOML parse error at line 11, column 18
+   |
+11 | crate3."path = "../somewhere"
+   |                  ^
+unquoted keys cannot be empty, expected letters, numbers, `-`, `_`
+
+---
+TOML parse error at line 11, column 19
+   |
+11 | crate3."path = "../somewhere"
+   |                   ^
+invalid basic string, expected `"`

crates/toml/tests/snapshots/invalid/key/partial-quoted.stderr

@@ -1,12 +1,12 @@
-TOML parse error at line 1, column 8
+TOML parse error at line 1, column 1
   |
 1 | partial"quoted" = 5
-  |        ^
-invalid unquoted key, expected letters, numbers, `-`, `_`
+  | ^
+invalid basic string, expected `"`
 
 ---
-TOML parse error at line 1, column 15
+TOML parse error at line 1, column 8
   |
 1 | partial"quoted" = 5
-  |               ^
-invalid unquoted key, expected letters, numbers, `-`, `_`
+  |        ^
+invalid basic string, expected non-double-quote visible characters, `\`

crates/toml_edit/tests/fixtures/invalid/ext/string/no-close-recovery-03.toml

@@ -0,0 +1,20 @@
+[package]
+name = "a_name"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+crate1 = { version = "0.1.0" }
+crate2 = { version = "1.0.0", features=[] }
+
+[patch.crates-io]
+crate3."path = "../somewhere"
+crate4."path = "/somewhere"
+crate5 = { "path = "../somewhere" }
+crate6 = { "path = "/somewhere" }
+
+[patch.crates-io.crate7]
+"path = "../somewhere"
+
+[patch.crates-io.crate8]
+"path = "/somewhere"

crates/toml_edit/tests/snapshots/invalid/ext/string/no-close-recovery-03.stderr

@@ -0,0 +1,5 @@
+TOML parse error at line 11, column 30
+   |
+11 | crate3."path = "../somewhere"
+   |                              ^
+key with no value, expected `=`

crates/toml_edit/tests/snapshots/invalid/key/partial-quoted.stderr

@@ -1,5 +1,5 @@
-TOML parse error at line 1, column 8
+TOML parse error at line 1, column 1
   |
 1 | partial"quoted" = 5
-  |        ^
-invalid unquoted key, expected letters, numbers, `-`, `_`
+  | ^
+invalid basic string, expected `"`

crates/toml_parser/src/decoder/string.rs

@@ -688,6 +688,16 @@ pub(crate) fn decode_unquoted_key<'i>(
 ) {
     let s = raw.as_str();
 
+    if s.ends_with("'''") {
+        return decode_ml_literal_string(raw, output, error);
+    } else if s.ends_with("\"\"\"") {
+        return decode_ml_basic_string(raw, output, error);
+    } else if s.ends_with("'") {
+        return decode_literal_string(raw, output, error);
+    } else if s.ends_with("\"") {
+        return decode_basic_string(raw, output, error);
+    }
+
     if s.is_empty() {
         error.report_error(
             ParseError::new("unquoted keys cannot be empty")