stringi update breaks readtext as well

[gagolews]

Apologies for what follows:

Package: readtext
Check: tests
New result: ERROR
    Running ‘testthat.R’ [9s/9s]
  Running the tests in ‘tests/testthat.R’ failed.
  Complete output:
    > Sys.setenv("R_TESTS" = "")
    > 
    > library(testthat)
    > library(readtext)
    > library(quanteda)
    Package version: 2.1.1
    Parallel computing: 2 of 32 threads used.
    See https://quanteda.io for tutorials and examples.
    
    Attaching package: 'quanteda'
    
    The following object is masked from 'package:utils':
    
        View
    
    > 
    > # save, then reset, readtext options
    > opts <- readtext_options()
    > readtext_options(reset = TRUE)
    > 
    > # set the soon-to-be-official-R-policy condition
    > Sys.setenv("_R_CHECK_LENGTH_1_CONDITION_" = TRUE)
    > 
    > test_check("readtext")
    ── 1. Failure: test for pdf file (@test-readtext.R#600)  ───────────────────────
    texts(readtext("../data/pdf/test.pdf")) not equal to `expected`.
    1/1 mismatches
    x[1]: "The quick brown fox jumps over the lazy dog\n\n\n\n\n                    
    x[1]:                 1\n\f"
    y[1]: "The quick brown fox jumps over the lazy dog\n                            
    y[1]:          1\n"
    
    â•â• testthat results  â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•â•
    [ OK: 158 | SKIPPED: 10 | WARNINGS: 3 | FAILED: 1 ]
    1. Failure: test for pdf file (@test-readtext.R#600) 
    
    Error: testthat unit tests failed
    Execution halted

but this may also be due to the failing checks of quanteda.