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util.interpolation: Add '~' as the opposite of '&' (render sub-block if falsy)

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One more magic character consumed!
This commit is contained in:
Matthew Wild 2020-09-09 17:10:33 +01:00
parent 33e7e5ef2d
commit 0ca2e88384
2 changed files with 14 additions and 1 deletions
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3
util/interpolation.lua
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@ -64,6 +64,9 @@ local function new_render(pat, escape, funcs)
elseif opt == '&' then
if not value then return ""; end
return render(s_sub(block, e), values);
elseif opt == '~' then
if value then return ""; end
return render(s_sub(block, e), values);
elseif opt == '?' and not value then
return render(s_sub(block, e), values);
elseif value ~= nil then