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fix(man.lua): E95 when piping to :Man #33068

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Problem: When piping raw manpage content into `:Man!`, buf name is
set to 'man://.. ref', but the check only matches the prefix.
Allows duplicate buffers to be created, triggering E95.

Solution: Match full buf name instead of only 'man://' prefix.
If the buffer already exists, generate a unique name with
'man://' .. 'ref' .. '?new=' format.

Refs: #30132
This commit is contained in:
João Bettencourt
2025-04-15 14:27:51 +01:00
committed by GitHub
parent 07b33c3266
commit 5333d6371b
2 changed files with 33 additions and 2 deletions
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17
runtime/lua/man.lua
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@@ -646,8 +646,21 @@ function M.init_pager()
local _, sect, err = pcall(parse_ref, ref)
vim.b.man_sect = err ~= nil and sect or ''
if not fn.bufname('%'):match('man://') then -- Avoid duplicate buffers, E95.
vim.cmd.file({ 'man://' .. fn.fnameescape(ref):lower(), mods = { silent = true } })
local man_bufname = 'man://' .. fn.fnameescape(ref):lower()
-- Raw manpage into (:Man!) overlooks `match('man://')` condition,
-- so if the buffer already exists, create new with a non existing name.
if vim.fn.bufexists(man_bufname) == 1 then
local new_bufname = man_bufname
for i = 1, 100 do
if vim.fn.bufexists(new_bufname) == 0 then
break
end
new_bufname = ('%s?new=%s'):format(man_bufname, i)
end
vim.cmd.file({ new_bufname, mods = { silent = true } })
elseif not fn.bufname('%'):match('man://') then -- Avoid duplicate buffers, E95.
vim.cmd.file({ man_bufname, mods = { silent = true } })
end
set_options()