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Template:Terminate sentence ensures a sentence ends with a specified terminator (default: a period). It avoids adding duplicate terminators and can optionally trim trailing spaces. It attempts to ignore trailing closing quotes or brackets when deciding whether a terminator is already present.

Usage

Basic:

{{Terminate sentence|This is a sentence}}
→ This is a sentence.

Named parameters:

{{Terminate sentence
 |text=He said "Hello"
 |term=.
}}
→ He said "Hello".

Custom terminator:

{{Terminate sentence|text=Warning|term=!}}
→ Warning!

Avoid duplicate terminator:

{{Terminate sentence|text=Already done.|term=.}}
→ Already done.

Trim trailing spaces:

{{Terminate sentence|text=Ends with space   |trim=yes}}
→ Ends with space.

Skip processing:

{{Terminate sentence|text=No changes here|skip=yes}}
→ No changes here

Append a note:

{{Terminate sentence|text=Complete|note=(source: 2025)}}
→ Complete. (source: 2025)

Parameters

1 / text: The input text to terminate.
term: The terminator to enforce at the end. Default is .. Common choices: !, ?.
trim: If yes/true/1, strips trailing spaces before checking.
skip: If yes/true/1, returns text unchanged (still appends note if provided).
allowdup: If yes/true/1, allows duplicate terminators (e.g., ellipses). Default disallows duplicates.
note: Optional text appended after a space, unaffected by termination logic.

Behavior details

Terminator detection attempts to ignore trailing closing quotes/brackets (", ', ”, ), ], }).
If the last visible character equals term, no extra terminator is added unless allowdup=yes.
If trim=yes, trailing spaces are removed before detection.
If note is present, it is added with a leading space after the final text.

Examples

Quotes:

{{Terminate sentence|text=He whispered "hush"|term=.}}

 → He whispered "hush".

Parentheses:

{{Terminate sentence|text=Complete (verified)|term=.}}

 → Complete (verified).

Exclamation:

{{Terminate sentence|text=Alert|term=!}}

 → Alert!

Ellipsis (allow duplicates):

{{Terminate sentence|text=Wait...|term=.|allowdup=yes}}

 → Wait....

Best practices

Prefer using term that matches the sentence intent (., !, ?).
For complex punctuation, consider the Lua-powered variant below.
Document usage in your template’s /doc page where you incorporate this helper.

Lua-powered variant (optional)

For more robust detection (including multilingual quotes and punctuation), create Module:TerminateUtil with:

-- Module:TerminateUtil
local M = {}

local closing = {
  [")"] = true, ["]"] = true, ["}"] = true,
  ['"'] = true, ["'"] = true, ["”"] = true, ["’"] = true, ["»"] = true, ["›"] = true
}

local function trimRight(s)
  return (s:gsub("%s+$",""))
end

function M.lastVisibleChar(args)
  local s = args.s or ""
  s = trimRight(s)
  local i = #s
  while i > 0 do
    local c = s:sub(i,i)
    if closing[c] then
      i = i - 1
    else
      return c
    end
  end
  return ""
end

return M

Then update the template to call:

{{#invoke:TerminateUtil|lastVisibleChar|s=text}}

This improves detection for closing quotes and brackets.

Result	Code	Normalized code
Done	Template:Tlxs	Template:Tlxs
Not done	Template:Tlxs	Template:Tlxs
*Not done and will not* be done**	Template:Tlxs	Template:Tlxs
Done - as a contested proposed deletion, the article has been restored on request.	Template:Tlxs	Template:Tlxs
Done - as an Articles for creation submission deleted under CSD G13, the page has been restored on request. Please edit the page to address the issues raised when it was declined, and re-submit it; "Articles for creation" is not for the indefinite hosting of material found to be unsuitable for inclusion in the encyclopedia.	Template:Tlxs or Template:Tlxs or Template:Tlxs	Template:Tlxs
Done - as an Articles for creation submission deleted under CSD G13, the page has been restored on request. Please note that you never submitted the entry for review. When you are ready, you need to click the green notice in the template at the top of the page that says "Template:Font color"	Template:Tlxs or Template:Tlxs or Template:Tlxs	Template:Tlxs
Blocked	Template:Tlxs	Template:Tlxs
Please repair your request - we cannot process malformed requests. Please use the code Template:Tlsx (replacing `pagename` with the name of the page you wish to have restored and `reasoning` with the reason for your request).	Template:Tlxs	Template:Tlxs
Not done - a deleted page with this name does not appear to exist.	Template:Tlxs	Template:Tlxs
Not done - this article has not been restored because it does not appear to meet our guidelines for inclusion of articles about companies. In general, Wikipedia considers a topic to be notable if there exist multiple reliable sources of information on the topic, external to the subject itself. Articles concerning companies will be deleted on sight if they are considered to be unambiguous advertising or promotion, or if they do not contain a credible assertion of the significance of the subject.	Template:Tlxs	Template:Tlxs
Not done - this article has not been restored because it does not appear to meet our guidelines for inclusion of articles about people. In general, Wikipedia considers a topic to be notable if there exist multiple reliable sources of information on the topic, external to the subject itself. Articles concerning people will be deleted on sight if they are considered to be unambiguous advertising or promotion, or if they do not contain a credible assertion of the significance of the subject.	Template:Tlxs	Template:Tlxs
Not done - this article has not been restored because it does not appear to meet our guidelines for inclusion of articles about music. In general, Wikipedia considers a topic to be notable if there exist multiple reliable sources of information on the topic, external to the subject itself. Articles concerning musicians or music groups will be deleted on sight if they are considered to be unambiguous advertising or promotion, or if they do not contain a credible assertion of the significance of the subject.	Template:Tlxs	Template:Tlxs
Userfied - the page has been restored to the userspace at user:pagename.	Template:Tlxs	Template:Tlxs
Userfied - the page has been restored to the userspace at user:pagename. You may work on improving the article's assertion of notability at its new location, but please contact Adminname (talk · contribs), the administrator who deleted the page, before moving it back to the article space. Please see the criteria for speedy deletion and the relevant notability guidelines - articles that are not in compliance will be deleted.	Template:Tlxs	Template:Tlxs
Not done - this Requests for Undeletion process is only for articles that were deleted uncontroversially, and does not apply to articles deleted after a deletion discussion. Since the article you are here about was deleted after a discussion took place at Wikipedia:Articles for deletion/Page, it cannot be undeleted through this process. However, if you believe that the outcome of the discussion did not reflect the consensus of the participants, or that significant new information has come to light since the article was deleted, you may contact the administrator who closed the discussion, user Template:User1. After you do so, if your concerns are not addressed and you still seek undeletion, a request may be made at deletion review.	Template:Tlxs	Template:Tlxs
Not done - this page was deleted in accordance with criterion for speedy deletion A7. If you believe that this decision was made in error, or that significant new information has come to light since the deletion, please contact the administrator who carried out the deletion, user Template:User1. If you have already done so, your concerns can be taken to deletion review.	Template:Tlxs	Template:Tlxs
Not done - this is not an appropriate topic for inclusion on Wikipedia. Please see Wikipedia's notability guidelines. Wikipedia does not accept articles which consist of original research, or which lack any reliable sources of information.	Template:Tlxs	Template:Tlxs
This page has not yet been deleted. Please visit the page to find out how to object to the deletion request.	Template:Tlxs	Template:Tlxs
This page has not yet been deleted. Please see WP:PROD for the instructions for responding to a proposed deletion.	Template:Tlxs	Template:Tlxs
This page has not yet been deleted. Please see Proposed deletion of biographies of living people for the instructions for responding to a proposed deletion of a biography of a living person.	Template:Tlxs	Template:Tlxs
Not done - this page is a copyright violation.	Template:Tlxs	Template:Tlxs
Not done - this page is a copyright violation of http://www.wikipedia.org.	Template:Tlxs	Template:Tlxs
To add a note concerning DRV to any message: If you believe that this decision was made in error, or that significant new information has come to light since the deletion, please contact the administrator who closed the discussion, user Template:User1. If you have already done so, your concerns can be taken to deletion review.	Template:Tlxs	Template:Tlxs