you can ]<space> to add newline below, or go down a line and O

or if u want a mapping ["add_newline_below", "move_visual_line_down", "insert_mode"]

Really like your idea to have a keymap for adding newline without continuing the comment. See linked PR above ^^

I feel like even some sort of naive detection would work, something like: if the comment character is "#", the first character following the start character is a "!", and the cursor is on the first line of the file - don't continue the "comment".

You can also just press <C-w> to remove a word in front of your cursor (it's also a keybinding in the terminal and pretty useful in my opinion).

I feel like even some sort of naive detection would work, something like: if the comment character is "#", the first character following the start character is a "!", and the cursor is on the first line of the file - don't continue the "comment".

Hm... I don't really see it as a trivial problem which can be fixed unless we apply this check only to bash.
Rust for example uses ! after // to mark it as a module documentation.

I feel like even some sort of naive detection would work, something like: if the comment character is "#", the first character following the start character is a "!", and the cursor is on the first line of the file - don't continue the "comment".

Hm... I don't really see it as a trivial problem which can be fixed unless we apply this check only to bash.
Rust for example uses ! after // to mark it as a module documentation.

I remember seeing somewhere in the codebase a SHEBANG_REGEX (probs different name) const str which is a regex. That could probably be re-used for this

Ah, I found it, helix-core/src/syntax.rs:

const SHEBANG: &str = r"#!\s*(?:\S*[/\\](?:env\s+(?:\-\S+\s+)*)?)?([^\s\.\d]+)";

When we continue line comments, perhaps we could

1. check if the current line index is 0, so we are on a (possibly) shebang line
2. check the regex against the line

Let me try to create a PR for this then