converted the variable to const and added a trim.

macros/src/lib.rs

@@ -2,13 +2,12 @@ use std::fs;
 
 use proc_macro::TokenStream;
 use quote::{format_ident, quote};
+use syn::{parse, Result};
 use syn::{
-    buffer::Cursor,
-    parse::{Parse, ParseStream, StepCursor},
+    parse::{Parse, ParseStream},
     spanned::Spanned,
     Error, Ident, Lit, LitInt,
 };
-use syn::{parse, Result};
 
 const DATA_DIR: &str = "data";
 const EXAMPLE_DIR: &str = "examples";
@@ -112,7 +111,7 @@ pub fn include_data(data: TokenStream) -> TokenStream {
             Some(p) => {
                 return quote! {
                     #[doc = #comment]
-                    static #ident: &str = include_str!(#p);
+                    const #ident: &str = include_str!(#p).trim_ascii();
                 }
                 .into()
             }
@@ -126,7 +125,7 @@ pub fn include_data(data: TokenStream) -> TokenStream {
     }
     quote! {
         #[doc = #comment]
-        static #ident: &str = "";
+        const #ident: &str = "";
     }
     .into()
 }
@@ -147,7 +146,7 @@ pub fn include_example(data: TokenStream) -> TokenStream {
             Some(p) => {
                 return quote! {
                     #[doc = #comment]
-                    static #ident: &str = include_str!(#p);
+                    const #ident: &str = include_str!(#p).trim_ascii();
                 }
                 .into()
             }
@@ -161,7 +160,7 @@ pub fn include_example(data: TokenStream) -> TokenStream {
     }
     quote! {
         #[doc = #comment]
-        static #ident: &str = "";
+        const #ident: &str = "";
     }
     .into()
 }