Styler crashes when there comments in multi-curly-braced expressions #1264
Description
Hi,
the combination of multiple curly braces and comments seem to kill the styler. The following 2 reprex showcase the issue.
super short example
I know, it's a weird example, but it parses
library(styler)
example_code <- "
foo <- {{
0# bar
}}
foo
"
styler::style_text(text = example_code, style = tidyverse_style)
#> Error in `handlers[[1L]]()`:
#> ! Styling resulted in code that isn't parsable. This should not happen.
#> ℹ This is an internal error that was detected in the styler package.
#> Please report it at <https://github.com/r-lib/styler/issues> with a reprex (<https://tidyverse.org/help/>) and the full backtrace.Created on 2025-07-18 with reprex v2.1.1
Session info
sessionInfo()
#> R version 4.4.3 (2025-02-28 ucrt)
#> Platform: x86_64-w64-mingw32/x64
#> Running under: Windows 11 x64 (build 22631)
#>
#> Matrix products: default
#>
#>
#> locale:
#> [1] LC_COLLATE=German_Germany.utf8 LC_CTYPE=German_Germany.utf8
#> [3] LC_MONETARY=German_Germany.utf8 LC_NUMERIC=C
#> [5] LC_TIME=German_Germany.utf8
#>
#> time zone: Europe/Berlin
#> tzcode source: internal
#>
#> attached base packages:
#> [1] stats graphics grDevices utils datasets methods base
#>
#> other attached packages:
#> [1] styler_1.10.3
#>
#> loaded via a namespace (and not attached):
#> [1] digest_0.6.37 fastmap_1.2.0 xfun_0.52 magrittr_2.0.3
#> [5] glue_1.8.0 R.utils_2.13.0 knitr_1.50 htmltools_0.5.8.1
#> [9] rmarkdown_2.29 lifecycle_1.0.4 cli_3.6.4 R.methodsS3_1.8.2
#> [13] vctrs_0.6.5 reprex_2.1.1 withr_3.0.2 compiler_4.4.3
#> [17] R.oo_1.27.1 R.cache_0.17.0 purrr_1.1.0 rstudioapi_0.17.1
#> [21] tools_4.4.3 pillar_1.11.0 evaluate_1.0.4 yaml_2.3.10
#> [25] rlang_1.1.6 fs_1.6.6more practical example
library(styler)
require(dplyr, warn.conflicts = FALSE, quietly = TRUE)
example_code <- "
require(dplyr, warn.conflicts = FALSE, quietly = TRUE)
df <- data.frame(foo = 1:5,bar = 6:10)
summarize_column <- function(data, column) {
data %>% summarize(mean_value = mean({{
column # Input via param
}}), colname = as_label(enquo(column)))
}
summarize_column(df, bar)
"
styler::style_text(text = example_code, style = tidyverse_style)
#> Error in `handlers[[1L]]()`:
#> ! Styling resulted in code that isn't parsable. This should not happen.
#> ℹ This is an internal error that was detected in the styler package.
#> Please report it at <https://github.com/r-lib/styler/issues> with a reprex (<https://tidyverse.org/help/>) and the full backtrace.Created on 2025-07-18 with reprex v2.1.1
Session info
sessionInfo()
#> R version 4.4.3 (2025-02-28 ucrt)
#> Platform: x86_64-w64-mingw32/x64
#> Running under: Windows 11 x64 (build 22631)
#>
#> Matrix products: default
#>
#>
#> locale:
#> [1] LC_COLLATE=German_Germany.utf8 LC_CTYPE=German_Germany.utf8
#> [3] LC_MONETARY=German_Germany.utf8 LC_NUMERIC=C
#> [5] LC_TIME=German_Germany.utf8
#>
#> time zone: Europe/Berlin
#> tzcode source: internal
#>
#> attached base packages:
#> [1] stats graphics grDevices utils datasets methods base
#>
#> other attached packages:
#> [1] dplyr_1.1.4 styler_1.10.3
#>
#> loaded via a namespace (and not attached):
#> [1] vctrs_0.6.5 cli_3.6.4 knitr_1.50 rlang_1.1.6
#> [5] xfun_0.52 purrr_1.1.0 generics_0.1.4 glue_1.8.0
#> [9] htmltools_0.5.8.1 rmarkdown_2.29 R.cache_0.17.0 evaluate_1.0.4
#> [13] tibble_3.2.1 fastmap_1.2.0 yaml_2.3.10 lifecycle_1.0.4
#> [17] compiler_4.4.3 fs_1.6.6 pkgconfig_2.0.3 rstudioapi_0.17.1
#> [21] R.oo_1.27.1 R.utils_2.13.0 digest_0.6.37 R6_2.6.1
#> [25] tidyselect_1.2.1 reprex_2.1.1 pillar_1.11.0 magrittr_2.0.3
#> [29] R.methodsS3_1.8.2 tools_4.4.3 withr_3.0.2