Fix incorrect line number tracking in lexer

The emit() function was always adding 1 to the line count for
ItemText, ItemRawString, ItemLeftDelim, and ItemRightDelim tokens,
regardless of actual newlines in the token. This caused incorrect
line numbers in error messages, especially when using trim markers
({{- and -}}).

Now counts actual newlines in all token types for correct line tracking.

Author: firstdorsal

Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 name = "gtmpl"
-version = "0.7.1"
-authors = ["Florian Dieminger <me@fiji-flo.de>"]
+version = "0.7.2"
+authors = ["Florian Dieminger <me@fiji-flo.de>", "Paul Colin Hennig"]
 description = "The Golang Templating Language for Rust"
 license = "MIT"
-repository = "https://github.com/fiji-flo/gtmpl-rust"
+repository = "https://github.com/firstdorsal/gtmpl-rust"
 documentation = "https://docs.rs/crate/gtmpl"
 keywords = ["golang", "template", "templating"]
 categories = ["template-engine"]

src/lexer.rs

@@ -251,13 +251,11 @@ impl LexerStateMachine {
 
     fn emit(&mut self, t: ItemType) {
         let s = &self.input[self.start..self.pos];
-        let lines = match t {
-            ItemType::ItemText
-            | ItemType::ItemRawString
-            | ItemType::ItemLeftDelim
-            | ItemType::ItemRightDelim => 1,
-            _ => s.chars().filter(|c| *c == '\n').count(),
-        };
+        // Count actual newlines in the token to track line numbers correctly.
+        // Previously, ItemText/ItemRawString/ItemLeftDelim/ItemRightDelim always
+        // added 1 to the line count, which was incorrect (e.g., {{ and }} contain
+        // no newlines, so they shouldn't increment the line counter).
+        let lines = s.chars().filter(|c| *c == '\n').count();
         self.items_sender
             .send(Item::new(t, self.start, s, self.line))
             .unwrap();

src/parse.rs

@@ -891,7 +891,7 @@ mod tests_mocked {
         let r = p.parse_tree();
         assert_eq!(
             r.err().unwrap().to_string(),
-            "template: foo:2:function eq not defined"
+            "template: foo:1:function eq not defined"
         );
         let funcs = &["eq"];
         let mut p = make_parser_with_funcs(r#"{{ if eq .foo "bar" }} 2000 {{ end }}"#, funcs);