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Make the setting-the-date example conditional

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This makes the example a bit more realistic/valuable by checking if the metadata value "date" is already present, before changing the value.
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the-solipsist 2020-08-26 16:04:14 +05:30 • committed by Albert Krewinkel
parent 93e3d463fd
commit 214f2f08e4
1 changed files with 5 additions and 3 deletions
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doc/lua-filters.md
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@ -362,12 +362,14 @@ end
## Setting the date in the metadata ## Setting the date in the metadata
This filter sets the date in the document's metadata to the This filter sets the date in the document's metadata to the
current date: current date, if a date isn't already set:
``` lua ``` lua
function Meta(m) function Meta(m)
m.date = os.date("%B %e, %Y") if m.date == nil then
return m m.date = os.date("%B %e, %Y")
return m
end
end end
``` ```