Highlighting inside injections breaks sometimes

[aldoborrero]

Mirrored from nix-community#45 by @musjj (opened 2023-08-21T11:49:17Z).

This issue is tracked here so the fork can work on it; upstream may not respond. Please add new context in this issue.

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When trying to embed nix variables into multi-line strings with injected highlighting, the highlighting breaks if there are quotes ("/') near it:

This is especially annoying if you're trying to escape ${...} inside shell scripts by using double quotes (''):

Note that this issue doesn't happen outside of injections (e.g. bash files).

[aldoborrero]

Likely improved by #36 (comment-prefix normalization + expanded injection patterns for lib.literalExpression, testScript, writeShellApplication with let-bindings, and writeText* by filename extension). If breakage still happens on current master, please share a minimal .nix reproducing the injection-highlighting glitch so we can trace which pattern it's coming through. Keeping open pending confirmation.