From ec92892162b882ad9da6ab587ed727b3e682aeb6 Mon Sep 17 00:00:00 2001
From: Orsell <34631691+OrsellGit@users.noreply.github.com>
Date: Thu, 18 Jun 2026 00:37:09 -0700
Subject: [PATCH 1/2] fix: Changed how the VBSP and VRAD compilers check their
 filename to determine behavior.

---
 src/compiler_launch.py | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/compiler_launch.py b/src/compiler_launch.py
index 01777ff9e..5d595d39d 100644
--- a/src/compiler_launch.py
+++ b/src/compiler_launch.py
@@ -16,13 +16,15 @@
     # Sourcecode-launch - check first sys arg.
     app_name = sys.argv.pop(1).casefold()
 
-app_name = app_name.removesuffix('_osx').removesuffix('_linux').removesuffix('.exe')
-
 if 'original' in app_name:
-    sys.exit('Original compilers replaced, verify game files in Steam!')
+    sys.exit('Original compilers were replaced! Please verify game files in Steam!')
+
+if not app_name.startswith(('vbsp', 'vrad')):
+    sys.exit(f'Invalid application name: "{app_name}"! Filename must start with "vbsp" or "vrad" to set application behavior.')
 
-if app_name not in ('vbsp', 'vrad'):
-    sys.exit(f'Unknown application name "{app_name}"!')
+# Remove the latter half of the app_name after the initial valid application behavior checks have been done.
+app_name = app_name.split(".")[0]
+app_name = app_name.split("_")[0]
 
 if app_name == 'vrad' and '--errorserver' in sys.argv:
     app_name = 'error_server'
@@ -38,14 +40,15 @@
 if app_name == 'vbsp':
     import vbsp
     func = vbsp.main
-elif app_name == 'error_server':
-    import error_server
-    func = error_server.main
 elif app_name == 'vrad':
     import vrad
     func = vrad.main
+elif app_name == 'error_server':
+    import error_server
+    func = error_server.main
 else:
-    raise AssertionError(app_name)
+    # Something broke with the earlier checks if the program got here.
+    sys.exit(f'Unable to set application behavior for "{app_name}"!')
 
 from trio_debug import Tracer
 tracer = Tracer() if utils.CODE_DEV_MODE else None

From 9ce68a1599236b3f2ac84f4ac960670c660b8ad1 Mon Sep 17 00:00:00 2001
From: Orsell <34631691+OrsellGit@users.noreply.github.com>
Date: Thu, 18 Jun 2026 18:52:56 -0700
Subject: [PATCH 2/2] revert: Reverted modified line adding back assertion.

---
 src/compiler_launch.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/compiler_launch.py b/src/compiler_launch.py
index 5d595d39d..75d544f47 100644
--- a/src/compiler_launch.py
+++ b/src/compiler_launch.py
@@ -47,8 +47,7 @@
     import error_server
     func = error_server.main
 else:
-    # Something broke with the earlier checks if the program got here.
-    sys.exit(f'Unable to set application behavior for "{app_name}"!')
+    raise AssertionError(app_name)
 
 from trio_debug import Tracer
 tracer = Tracer() if utils.CODE_DEV_MODE else None