Lua

Get a Mail-Merge Replace Pattern

Demonstrates the Chilkat Email.GetReplacePattern method, which returns a replacement pattern — the search string — previously defined for mail-merge operations with SetReplacePattern. The index is zero-based. This example defines two patterns and enumerates them.

Background: In Chilkat's mail-merge, each entry is a pattern (a placeholder token such as FIRST_NAME) paired with a replacement string. GetReplacePattern retrieves the search side of the pair at a given index; GetReplaceString retrieves the matching replacement. Reading them back is useful for inspecting or logging exactly which substitutions will be applied when the message is sent.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the GetReplacePattern method, which returns a replacement pattern (the
-- search string) previously defined for mail-merge operations with SetReplacePattern.
-- The index is zero-based.

local email = chilkat.Email.new()
email.subject = "Hello FIRST_NAME"
email.body = "Dear FIRST_NAME, welcome to CITY."

email:set_replace_pattern("FIRST_NAME", "John")
email:set_replace_pattern("CITY", "Denver")

local n = email.num_replace_patterns
for i = 0, n - 1 do
    print("Pattern " .. i .. ": " .. email:get_replace_pattern(i))
end