lewis6991

General performance tips

Efficiently remove items from an array

.. vs string.format('%s%s%s') in LuaJIT: hrsh7th/nvim-cmp#1980 (comment)

Profile Code

lewis6991

Problem

• Plugins cannot inspect folds
• Custom folds require foldexpr which is inefficient as it requires evaluating this expression on every buffer line.

Solution

API for plugins to set, inspect folds and get fold events.

lewis6991

Clang sanitizers (ASAN and UBSAN)

ASAN/UBSAN can be used to detect memory errors and other common forms of undefined behavior at runtime in debug builds.

• To build Neovim with sanitizers enabled, use

  rm -rf build && CMAKE_EXTRA_FLAGS="-DCMAKE_C_COMPILER=clang -DCLANG_ASAN_UBSAN=1" make

• When running Neovim, use

lewis6991

# This script assumes you have modern versions of gcc, git and curl on your path.

HOMEBREW_PREFIX="$1"

# From https://github.com/Homebrew/discussions/discussions/254
export HOMEBREW_DEVELOPER=1
export HOMEBREW_CURL_PATH="$(which curl)"
export HOMEBREW_GIT_PATH="$(which git)"

# From https://docs.brew.sh/Homebrew-on-Linux#alternative-installation

lewis6991

#! /usr/bin/env bash

set -e

EXTRA_OPTS="--ignore-submodules"

mapfile -t status < <(git -c color.status=always status --short $EXTRA_OPTS)

if [ ${#status[@]} -eq 0 ]; then
    printf "\033[93mNothing to commit, working tree clean\033[0m\n"