Hydra 0.2.0 Possible Bug | Typst | Page 1

distant lake Dec 30, 2023, 8:22 PM

#

When using this it works fine, unless we have a empty heading (level 1), when on the page with the empty heading it puts the header of the title, when it should be leaving it empty, once I fill the heading with some text, the issue goes away.

#let getHeader() = {
  locate(loc => {
    let chapter = hydra(
      sel: heading.where(level: 1),
      display: (_, it) => {
        it.body
      },
      loc: loc,
    )
    
    let section = hydra(
      display: (context, element) => element.body,
      loc: loc,
    )
  
    return [
      #set text(size: 10pt)
      
      #if section != none and chapter != none and section != chapter {
        smallcaps(chapter); h(1fr); emph(section)
        line(stroke: gradient.linear(black, gray) + .5pt,length: 100%)
      } else if chapter != none {
        align(center, smallcaps(chapter))
        line(stroke: gradient.linear(gray, black).repeat(2, mirror: true) + .5pt, length: 100%)
      } else {
        [#line(length: 100%, stroke: .25pt)]
      }
    ]
  })
}```

#

  show heading.where(level: 1): it => [
    #pagebreak(weak: true)
    #set align(right)
    #set text(22pt)
    #underline(extent: 2pt)[
      #block(smallcaps(it.body))
      #v(0.4em)
    ]
  ]```

distant lake Dec 30, 2023, 8:22 PM

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distant lake ```rust show heading.where(level: 1): it => [ #pagebreak(weak: true) #...

Each of my level 1 headings are on their own page

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https://typst.app/project/r9iYD1gDVRT_cIXI1NBpA7

distant lake Dec 30, 2023, 8:27 PM

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distant lake https://typst.app/project/r9iYD1gDVRT_cIXI1NBpA7

I have provided a minimal test project that shows what I mean

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@safe juniper c.c

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I'm not sure if this is an issue with my getHeader() function or hydra itself

safe juniper Dec 30, 2023, 8:44 PM

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distant lake When using this it works fine, unless we have a empty heading (level 1), when on...

Yes i think this is related to https://github.com/tingerrr/hydra/issues/2

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ah wrong issue

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one sec

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I think it's this actually: https://github.com/typst/typst/issues/2631

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If the a page is empty the queries suddenly return wonky results

distant lake Dec 30, 2023, 8:46 PM

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hm, I'm guessing no workaround untill the issue is resolved

safe juniper Dec 30, 2023, 8:46 PM

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unfortunately no

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try using #hide[.]

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below the headings

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it may fix the query result

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I'll open an issue to mark this as an upstream problem

distant lake Dec 30, 2023, 8:49 PM

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Alright, atleast it's a known issue

safe juniper Dec 30, 2023, 8:50 PM

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#hide[.] works btw

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unfortunate but well

distant lake Dec 30, 2023, 8:52 PM

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I'll use that if I'm going to keep my headings empty

safe juniper Dec 30, 2023, 8:55 PM

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ok here we go: https://github.com/tingerrr/hydra/issues/7

distant lake Dec 30, 2023, 9:49 PM

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Do we have something like hide but like pagebreaks(weak), such that it only applies the #hide[.] on heading that don't have any text

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I want to put the #hide[.] on #show heading.where(level: 1): it => [], but only make it apply for empty ones

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I'm acutally suprised that putting hide inside the #show heading.where(level: 1): it => [] actually doesn't work

safe juniper Dec 30, 2023, 10:19 PM

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I don't think so

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After all this is a bug, so once you actually add content it's correct.

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So if you Wan it to be correct while drafting you will have to add this while the hug exists or juste ait till you have you document filled.

distant lake Dec 30, 2023, 10:21 PM

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Yea, I understand, thank you for the information and your time

#Hydra 0.2.0 Possible Bug