A slightly more reliable version:
```
local stringify = pandoc.utils.stringify
function Meta(m)
if m.references ~= nil then
for _, el in ipairs (m.references) do
-- print(stringify(el.title))
el.title = pandoc.Str(string.gsub(stringify(el.title), ': ', '. '))
-- print(el.title)
end
end
return m
end```
(This won’t replace colons in biblical references, e.g. Gen 1:1)
You can test with this file :
```markdown
---
references:
- type: book
id: doe
author:
- family: Doe
given: Jane
issued:
date-parts:
- - 2022
title: 'A book: with a subtitle and a reference to Gen 1:1, but that is not a problem'
publisher: 'Whatever press'
lang: de-De
...
test [@doe]
```
The filter itself does not cover capitalization. For some reason, pandoc or citeproc applies title-case transformation here. I don’t think it should though.
Von: pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org <pandoc-...@googlegroups.com> Im Auftrag von John Carter Wood
Gesendet: Freitag, 1. Juli 2022 18:24
An: pandoc-discuss <pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Betreff: Re: Changing colons to full-stops in titles
That's very interesting, thanks! I'll try it out when I get a chance in the coming days.
I have thought about this issue of false positives while thinking about the option of some kind of filter. But...I think they would be very rare. I have a hard time thinking of a title with a colon in it that shouldn't be -- in this case -- be turned into a dot. At least, I don't have anything in my 1,200 references where I can see that that wouldn't apply.
Although, of course, I'm sure there are some out there...
Just a question: would this also ensure that the first word after the dot is capitalised? Or does that open a new series of problems? :-)
denis...@unibe.ch schrieb am Freitag, 1. Juli 2022 um 18:17:02 UTC+2:
Here’s a very simple and absolutely unreliable version of a filter. This will replace every colon in a title with a period.
```lua
local stringify = pandoc.utils.stringify
function Meta(m)
if m.references ~= nil then
for _, el in ipairs (m.references) do
print(stringify(el.title))
el.title = pandoc.Str(string.gsub(stringify(el.title), ':', '.'))
print(el.title)
end
end
return m
end
```
Question is how this can be made robust enough to avoid false positives.
Von: pandoc-...-/JYPxA39Uh4Ykp1iOSErHA@public.gmane.orgm <pandoc-...@googlegroups.com> Im Auftrag von John Carter Wood
Gesendet: Freitag, 1. Juli 2022 17:52
An: pandoc-discuss <pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Betreff: Re: Changing colons to full-stops in titles
Thanks for the suggestions, a couple of which are kind of stretching my knowledge of these things, but I see where they're going.
As to JGM's question: I am using a CSL json bibliography, so my titles are in a single field. ("title":"Science and religion: new perspectives on the dialogue")
The issue is that *most* of the journals / publishers I publish in use, as here, the colon. *Some* (mainly German) styles want the period. If I were solely interested in either one, I could choose and just enter the relevant punctuation in the title field. However, I want to continue saving my bibliographic entries with a colon (because that's the most standard one for me), but have the option of automatically converting them to a period for those cases where I need to. If that makes sense.
Thus: going through denis's options:1. I have switched to json bibliographies from bibtex/biblatex as they seemed to offer more flexibility (I was running into issue with the strange archival references I have to make in my field, and JSON seemed to work better in that regard). So this seems to not apply.
2. Seems to not apply, as I have a single title field
3. Sounds really interesting, and I use BBT, though it also sounds like I would here have to create a separate bibliography file from my Zotero database for those publishers/styles that require the dot. This is not *too* onerous, as it would at least be automated.
4. Having a filter that I could simply apply (as part of a pandoc command, say) or not apply as relevant seems like the most flexible / efficient solution. I don't know lua, but if this is one possible way, then I could use it as a (hopefully fairly simple?) way into learning it.
Does this help to clarify my situation?
denis...-NSENcxR/0n0@public.gmane.org schrieb am Freitag, 1. Juli 2022 um 17:34:55 UTC+2:
Yes, that’s a known issue...
There are a couple of possible solutions :
1. use biblatex databases and patch pandoc so it will concat title and subtitle fields using periods. (line 667 https://github.com/jgm/pandoc/blob/master/src/Text/Pandoc/Citeproc/BibTeX.hs)
2. I think pandoc’s citeproc will just treat every unknown variable as a string variable (see https://github.com/jgm/citeproc/blob/3f94424db469c804cf2dac2d22dc7a18b614f43e/src/Citeproc/Types.hs#L1054 and https://github.com/jgm/citeproc/blob/3f94424db469c804cf2dac2d22dc7a18b614f43e/src/Citeproc/Types.hs#L901), so you should be able to use «subtitle» in styles. (This will give you warnings when using the style with Zotero and it won’t work reliably across implementations, but anyway ...)
3. if you’re using Zotero, you can leverage Zotero BBT’s postscript feature to manipulate the JSON after exporting.
E.g., this one :
if (Translator.BetterCSL && item.title) {
reference.title = reference.title.replace(/ : /g, '. ')
}
Not bullet-proof, but simple. You will want to choose a better separator, maybe a double-bar or so.
4. Doing the with lua should also be possible...
The question is: do you have the subtitle in a distinct field or is it just in the title field?
Von: pandoc-...-/JYPxA39Uh4Ykp1iOSErHA@public.gmane.orgm <pandoc-...@googlegroups.com> Im Auftrag von John Carter Wood
Gesendet: Freitag, 1. Juli 2022 16:39
An: pandoc-discuss <pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Betreff: Changing colons to full-stops in titles
I have one final (for now...) issue in setting up a CSL file (which I use with pandoc/citeproc and references in a json file).
I'm not sure whether this is a CSL issue or whether it's an issue that can be solved via using a filter (or some other solution) in pandoc, but I thought there might be some people here who might have faced a similar issue.
The house style for here (German-based publisher) wants a full-stop/period between main title and subtitle in citations / bibliographies; US/UK standard is a colon between main title and subtitle. And reference managers like Zotero -- IIUC -- save titles as single fields (at least they are in my version of Zotero). So it doesn't seem like it is possible to control what delimiter is used between them via CSL.
I have found various discussions of relevant title/subtitle division issues -- some going back quite a few years -- in forums on Zotero:
https://forums.zotero.org/discussion/8077/separate-fields-for-title-and-subtitle/
...and CSL:
https://discourse.citationstyles.org/t/handling-main-sub-title-splits-citeproc-js/1563/11
However, these were in part discussions among developers about possible changes, and I'm not sure of the current status of this issue or whether there is a way to handle it.
Would it be possible to automate turning colons in titles into full-stops via using a filter? If so is there such a filter already around? Can this be done via CSL?
Or is this, as of now, impossible?
(Or is there a real simple solution that I have, as usual, overlooked...)--
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