Imagine I have a variable lv_my_var.
If I have some code:
SELECT col1, col2, col3, lv_my_var FROM my_table;
Currently the syntax highlighter makes the columns and the variable the same exact color. It would be great if SQL Developer could detect variable/parameter names from a declaration section and highlight variables in a different color or allow users to define custom patterns that should be highlighted as variables (for my workflow, local variables always start lv_, parameters start p_, etc.).
This would code much more readable at a glance. The “Language PL/SQL” extension supports this and it is a great feature, but not compatible with the official Oracle extension.