prompt library: use context.text placeholder as a string value

[chrisgrieser]

Problem

Right now, to insert the selection in a prompt in Markdown, we need to use${shared.code}. However, without our own shared.lua that results in an error:

[WARN] 2025-12-14 23:02:48
[Prompt Library] Could not resolve `${shared.code}` in `…/.config/nvim/prompts/explain.md`

For something as straightforward as the selected text, there are context placeholders, though. But using ${context.lines} sends something like table: 0x0109b3caf8 (a lua raw table) since that particular placeholder is a table, not a string.

So basically, when using the prompt_library, we need to copypaste this file into our own config.

Suggested Solution

Make it more straightforward, and add context.text as a placeholder, which is nothing but context.lines joined with line breaks. Then we can just add ${context.text} into the prompt, without the need for a lua function of our own for simple prompts.

[olimorris]

This would be a great PR 👍🏼

[olimorris]

Turns out this was such a damn good idea that I merged it in #2523. Access it via ${context.code}. This has been in the plugin for almost two years can't believe we hadn't thought of it!

[chrisgrieser]

arg, was just about to submit a PR. Just need a few minutes to figure out where the change needed to be made. :P

thanks for the quick implementation though!

[olimorris]

Oh I'm so sorry Chris. I'm on a bit of a mission tonight.