rust-lang / rust-lang/rust-analyzer

Snippet $0 placeholder in macros

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C-support
Dominant language
Rust
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Description

I get no "end" placeholder when using macros. Is this working as intended?

Problem

Here is an example:

Image

When I expand the printl snippet I get no tabstop at all. Pressing tab will just insert tabs. Compare this to the exapned "OK" where a tab will place my cursor at the end.

Expected

Pressing tab will place my cursor at the end for macros

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the macro expansion described in the issue, comparing the printl snippet with the expanded OK snippet and their Tab behavior. Trace the snippet expansion and placeholder handling from the relevant rust-analyzer entry point; done means macros provide an end tabstop so pressing Tab moves the cursor to the end.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
devtools
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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