rstudio
Limitations with htmltools metadata
I'm happy to help fix these, just putting here so they're captured.
htmlDependencies with src=c(href="...") isn't supported
---
output: html_document
---
```{r echo=FALSE}
library(htmltools)
```
```{r}
tagList(htmlDependency(
name = "google-font-exo-2",
version = "1.0.0",
src = c(href = "https://fonts.googleapis.com/"),
stylesheet = "css2?family=Exo+2:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap"
))
tags$style("body { font-family: 'Exo 2'; }")
```
I'd expect this to render properly, but instead it throws Error: path for html_dependency not provided.
singleton() not respected
I'd expect this to alert just once, but it alerts twice.
---
output: html_document
---
```{r echo=FALSE}
library(htmltools)
```
```{r}
tagList(
singleton(tags$script('alert("hi");'))
)
```
```{r}
tagList(
singleton(tags$script('alert("hi");'))
)
```
head() not respected
I'd expect this to alert, and for the script tag to be in the <head>, but it doesn't do anything.
---
output: html_document
---
```{r echo=FALSE}
library(htmltools)
```
```{r}
tagList(tags$head(tags$script('alert("hi");')))
```
xfun::session_info()
R version 4.0.0 (2020-04-24)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 18.04.4 LTS, RStudio 1.4.437
Locale:
LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
LC_PAPER=en_US.UTF-8 LC_NAME=C
LC_ADDRESS=C LC_TELEPHONE=C
LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
Package version:
assertthat_0.2.1 backports_1.1.7 base64enc_0.1.3
callr_3.4.3 cli_2.0.2 compiler_4.0.0
crayon_1.3.4 curl_4.3 desc_1.2.0
digest_0.6.25 evaluate_0.14 fansi_0.4.1
fs_1.4.1 glue_1.4.1 graphics_4.0.0
grDevices_4.0.0 highr_0.8 htmltools_0.4.0
jsonlite_1.6.1 knitr_1.28 magrittr_1.5
markdown_1.1 methods_4.0.0 mime_0.9
packrat_0.5.0-26 pkgbuild_1.0.8 prettyunits_1.1.1
processx_3.4.2 ps_1.3.3 R6_2.4.1
Rcpp_1.0.4.6 remotes_2.1.1 rlang_0.4.6
rmarkdown_2.2.2 rprojroot_1.3-2 rstudioapi_0.11
stats_4.0.0 stringi_1.4.6 stringr_1.4.0
tinytex_0.23 tools_4.0.0 utils_4.0.0
withr_2.2.0 xfun_0.14 yaml_2.2.1
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Thanks for raising these problems! For the record, #1805 tries to remove the first limitation, but I haven't had a chance to review it yet (well, I did briefly look at it but wasn't sure if it was worth introducing the dependency RCurl).
I've forked & updated #1805 bc I agree with your concerns, I've raised it as a new PR #1948
Just to track progress, this issues cover 3 items we need to fix to close
- [x] htmlDependencies with src=c(href="...") isn't supported -> Fixed by #2151
- [ ] singleton() not respected
- [ ] head() not respected https://github.com/rstudio/rmarkdown/issues/2475
