UK postcode specification regex

[chrisbrownlie]

Prework

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Description

The UK postcode specification for col_vals_within_spec(..., spec = "postal[GB]") does not correctly validate postcodes. Maybe a regex problem related to the answer here?

Reproducible example

library(pointblank)
pst <- data.frame(
  postcodes = c("ST18 9AT", 
                "RH15 0EG",  
                "HP18 9NG", 
                "CT14 0NW",
                "TD15 2XQ", 
                "LL30 1RD", 
                "TW20 0YJ"
  )
)

agent <- pst |>
  create_agent() |>
  col_vals_within_spec(postcodes, spec = "postal[GB]") |>
  interrogate()
agent$validation_set[c("i", "n_passed", "n_failed")]
#> # A tibble: 1 × 3
#>       i n_passed n_failed
#>   <int>    <dbl>    <dbl>
#> 1     1        0        7

^{Created on 2025-02-05 with reprex v2.1.0}

Expected result

All the postcodes above should pass as they are valid UK postcodes (can verify that here.)

Session info

sessioninfo::session_info()
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#>  language (EN)
#>  collate  English_United Kingdom.utf8
#>  ctype    English_United Kingdom.utf8
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#>  date     2025-02-05
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