Source (F9)

The Source view shows syntax-highlighted source code for the current execution point, when source files are available.

Display

  Source (main.c:42) (c)
     40│  int x = 10;
     41│  int y = 20;
  >  42│  int z = x + y;
     43│  printf("%d\n", z);
     44│  return 0;

• The panel title shows the filename, line number, and detected language: Source (main.c:42) (c)
• The current line is marked with > in green
• Line numbers are displayed in a left column

Syntax Highlighting

Source code is syntax-highlighted using treesitter (via the arborium crate) with the Ayu Dark theme.

Supported languages:

• C
• C++
• Rust

The language is auto-detected from GDB’s show language output.

Source Detection

Source file and line information comes from GDB stop events:

1. The fullname field (absolute path) from *stopped MI records
2. Falls back to the file field if fullname is not available
3. The actual file is read from disk — the source must be present on the local filesystem

In Main View

When source is available, the Source panel appears as the bottom section of the Main (F1) view, below Instructions. If no source is available, the Source panel is hidden.

Keybindings