**7**
### Bugs
- Potential buffer overflow in `highlight_code` and `parse_markdown_to_ansi` functions.
- Use of hard-coded buffer size which may not be enough for large input.
### Optimizations
- Use dynamic strings or vector-like data structures to handle larger inputs safely.
- Optimize the `is_keyword` function by using a hash set or another efficient data structure for keyword lookup.
- Refactor common code patterns (like the `while` loops for parsing) into reusable helper functions to reduce redundancy.
### Good Points
- Clear use of ANSI escape codes for formatting which enhances code readability.
- Proper division between handling code syntax and markdown syntax.
- Inclusion of both code highlighting and markdown parsing in a single, cohesive codebase.
- Follows good practices regarding licensing with the inclusion of the MIT License.
### Summary
The code efficiently uses ANSI escape codes to highlight keywords in source code and parse markdown into ANSI-colored text. The main concerns are related to the safety of buffer usage, as it is prone to overflow when handling long inputs. The keyword detection could be optimized for speed, and the code could be made more reusable with refactoring. Overall, the program serves its purpose well but would benefit from improvements in robustness and efficiency.
### Open source alternatives
- **Pygments**: A generic syntax highlighter that supports many languages and formats.
- **highlight.js**: A JavaScript library with similar functionality that works in browsers.
- **Rouge**: A Ruby-based syntax highlighter compatible with over 100 languages.