From d675bd01b1e78b93e559320b262bdae40b3b54b2 Mon Sep 17 00:00:00 2001 From: Gregory Anders <8965202+gpanders@users.noreply.github.com> Date: Fri, 7 Apr 2023 08:22:47 -0600 Subject: feat(lua): allow vim.F.if_nil to take multiple arguments (#22903) The first argument which is non-nil is returned. This is useful when using nested default values (e.g. in the EditorConfig plugin). Before: local enable = vim.F.if_nil(vim.b.editorconfig, vim.F.if_nil(vim.g.editorconfig, true)) After: local enable = vim.F.if_nil(vim.b.editorconfig, vim.g.editorconfig, true) --- runtime/lua/vim/F.lua | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) (limited to 'runtime/lua/vim/F.lua') diff --git a/runtime/lua/vim/F.lua b/runtime/lua/vim/F.lua index 3e370c0a84..16c834b371 100644 --- a/runtime/lua/vim/F.lua +++ b/runtime/lua/vim/F.lua @@ -1,18 +1,29 @@ local F = {} ---- Returns {a} if it is not nil, otherwise returns {b}. +--- Returns the first argument which is not nil. --- ----@generic A ----@generic B +--- If all arguments are nil, returns nil. --- ----@param a A ----@param b B ----@return A | B -function F.if_nil(a, b) - if a == nil then - return b +--- Examples: +---
+--- local a = nil
+--- local b = nil
+--- local c = 42
+--- local d = true
+--- assert(vim.F.if_nil(a, b, c, d) == 42)
+--- 
+--- +---@param ... any +---@return any +function F.if_nil(...) + local nargs = select('#', ...) + for i = 1, nargs do + local v = select(i, ...) + if v ~= nil then + return v + end end - return a + return nil end -- Use in combination with pcall -- cgit From 2e92065686f62851318150a315591c30b8306a4b Mon Sep 17 00:00:00 2001 From: Gregory Anders <8965202+gpanders@users.noreply.github.com> Date: Thu, 14 Sep 2023 08:23:01 -0500 Subject: docs: replace
 with ``` (#25136)

---
 runtime/lua/vim/F.lua | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'runtime/lua/vim/F.lua')

diff --git a/runtime/lua/vim/F.lua b/runtime/lua/vim/F.lua
index 16c834b371..5ed60ca8ab 100644
--- a/runtime/lua/vim/F.lua
+++ b/runtime/lua/vim/F.lua
@@ -5,13 +5,14 @@ local F = {}
 --- If all arguments are nil, returns nil.
 ---
 --- Examples:
---- 
+---
+--- ```lua
 --- local a = nil
 --- local b = nil
 --- local c = 42
 --- local d = true
 --- assert(vim.F.if_nil(a, b, c, d) == 42)
---- 
+--- ``` --- ---@param ... any ---@return any -- cgit