Hello guys, my question is basically in the title. I would really like to be able to have the parameter names included when I cursor over a function and open the ‘hover’ window to show basic info about it. Currently it only shows me the expected types, which while still useful I feel is only a piece of the puzzle when working either with a new library, or a codebase you’re not familiar with.

As an example I’m learning ncurses these past couple days, and its significantly flow-breaking to have to switch focus away from the editor to either search on the web what a particular function takes as parameters, or open a separate terminal to read the man page for it. I’m still not familiar with the library so I frequently need to look up what a parameter represents in the context of the code, in addition to what type I should give it. Is there any way to do this while still using clangd as my lsp server?

Ive also included a screenshot of one such hover window for the ncurses function mvprintw.

  • OscarEnglish
    3·
    3 months ago

    Mine looks like this:

    So it should be possible, at least for the parameters.

    For reference, here's my active LSP config (from :LspInfo): 
    - clangd (id: 3)
  - Version: clangd version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) linux+grpc x86_64-unknown-linux-gnu
  - Root directory: ~/repos/traffic-generator
  - Command: { "clangd", "--clang-tidy", "--enable-config", "--compile-commands-dir=build" }
  - Settings: {}
  - Attached buffers: 134
    And my .clangd: 
    ---
Diagnostics:
    UnusedIncludes: Strict
    MissingIncludes: Strict
    ClangTidy:
      FastCheckFilter: None
      Add:
        - bugprone-*
        - cert-*
        - clang-analyzer-*
        - clang-diagnostic-*
        - concurrency-*
        - misc-*
        - modernize-*
        - performance-*
        - portability-*
        - readability-*
      Remove:
        # - readability-redundant-member-init
        - bugprone-easily-swappable-parameters
        - readability-identifier-length
        # - readability-function-cognitive-complexity

CompileFlags:
  Add: [-xc]
  Remove: [-fanalyzer]

Completion:
  AllScopes: true

InlayHints:
    Enabled: No

SemanticTokens:
  DisabledKinds: []
  DisabledModifiers: []
...