run imgui demo

fonts/gen_font_includes.py

@@ -8,7 +8,8 @@ import subprocess
 DEFAULT_FONTS = ['B612_Mono', 'BrassMono']
 
 def generate_font(header_file, path):
-    symbol_name=os.path.basename(path).replace('-', '_')
+    symbol_name=os.path.splitext(os.path.basename(path))[0]
+    symbol_name=symbol_name.replace('-', '_')
     output = subprocess.check_output(
             f'binary_to_compressed_c "{path}" {symbol_name}',
             shell=True)
@@ -24,7 +25,7 @@ def generate_header(header, guard, files):
         raise
     with open(header, 'wt') as header_file:
         header_file.write(f"""#ifndef {guard}
-#define{guard}
+#define {guard}
 
 """)
         for file in files: