fix(tauri-macros): escape `_` in mobile entry point's app name (#5029)

core/tauri-macros/src/mobile.rs

@@ -4,10 +4,15 @@ use quote::{format_ident, quote};
 use std::env::var;
 use syn::{parse_macro_input, spanned::Spanned, ItemFn};
 
-fn get_env_var(name: &str, error: &mut Option<TokenStream2>, function: &ItemFn) -> TokenStream2 {
+fn get_env_var<R: FnOnce(String) -> String>(
+  name: &str,
+  replacer: R,
+  error: &mut Option<TokenStream2>,
+  function: &ItemFn,
+) -> TokenStream2 {
   match var(name) {
     Ok(value) => {
-      let ident = format_ident!("{}", value);
+      let ident = format_ident!("{}", replacer(value));
       quote!(#ident)
     }
     Err(_) => {
@@ -31,8 +36,13 @@ pub fn entry_point(_attributes: TokenStream, item: TokenStream) -> TokenStream {
   let function_name = function.sig.ident.clone();
 
   let mut error = None;
-  let domain = get_env_var("TAURI_ANDROID_DOMAIN", &mut error, &function);
-  let app_name = get_env_var("CARGO_PKG_NAME", &mut error, &function);
+  let domain = get_env_var("TAURI_ANDROID_DOMAIN", |r| r, &mut error, &function);
+  let app_name = get_env_var(
+    "CARGO_PKG_NAME",
+    |r| r.replace('_', "_1"),
+    &mut error,
+    &function,
+  );
 
   if let Some(e) = error {
     quote!(#e).into()

examples/api/src-tauri/Cargo.lock

@@ -3107,8 +3107,7 @@ dependencies = [
 [[package]]
 name = "tao"
 version = "0.13.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2093fa6bba3cc0c185b21c900de1b757e66637e78848cbcdda967b836d8c0ec"
+source = "git+https://github.com/tauri-apps/tao?branch=dev#816ca49dc648a5286eab943c6fc936629fd3a596"
 dependencies = [
  "bitflags",
  "cairo-rs",

examples/api/src-tauri/Cargo.toml

@@ -8,6 +8,7 @@ license = "Apache-2.0 OR MIT"
 
 [patch.crates-io]
 wry = { git = "https://github.com/tauri-apps/wry", branch = "dev" }
+tao = { git = "https://github.com/tauri-apps/tao", branch = "dev" }
 
 [lib]
 crate-type = ["staticlib", "cdylib", "rlib"]