From 1637e363df9b41a421db5cb97f7969ff7c37602f Mon Sep 17 00:00:00 2001
From: dffdff2423 <dffdff2423@gmail.com>
Date: Thu, 24 Nov 2022 13:50:56 -0600
Subject: [PATCH 1/2] Fix unexpected argument panic in `pest_debugger`

Fixes a panic when you provide the debugger executable with an argument
it does not expect. It now exits gracefully.

before:
```
$ pest_debugger random args
thread 'main' panicked at 'internal error: entered unreachable code', /home/USERNAME/.cargo/registry/src/github.com-1ecc6299db9ec823/pest_debugger-2.5.0/src/main.rs:259:22
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```

after:
```
$ pest_debugger random args
Error: unexpected argument `random`
Error: unexpected argument `args`
```
---
 debugger/src/main.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/debugger/src/main.rs b/debugger/src/main.rs
index 59945542..078d1999 100644
--- a/debugger/src/main.rs
+++ b/debugger/src/main.rs
@@ -198,6 +198,7 @@ impl Default for CliArgs {
         };
         let args = std::env::args();
         let mut iter = args.skip(1);
+        let mut unexpected_arg = false;
         while let Some(arg) = iter.next() {
             match arg.as_str() {
                 "-g" | "--grammar" => {
@@ -256,9 +257,15 @@ impl Default for CliArgs {
                     );
                     std::process::exit(0);
                 }
-                _ => unreachable!(),
+                arg => {
+                    eprintln!("Error: unexpected argument `{}`", arg);
+                    unexpected_arg = true;
+                },
             }
         }
+        if unexpected_arg {
+            std::process::exit(1);
+        }
         result
     }
 }

From 972a62d112d1721b862da034e14fae0b32758f6d Mon Sep 17 00:00:00 2001
From: Tomas Tauber <2410580+tomtau@users.noreply.github.com>
Date: Fri, 25 Nov 2022 08:12:38 +0800
Subject: [PATCH 2/2] Update debugger/src/main.rs

---
 debugger/src/main.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debugger/src/main.rs b/debugger/src/main.rs
index 078d1999..7ac6cc07 100644
--- a/debugger/src/main.rs
+++ b/debugger/src/main.rs
@@ -260,7 +260,7 @@ impl Default for CliArgs {
                 arg => {
                     eprintln!("Error: unexpected argument `{}`", arg);
                     unexpected_arg = true;
-                },
+                }
             }
         }
         if unexpected_arg {