[1] "have"                              "argument `expr` as first argument"
[3] ""                                  ""

[1] "not have"      "any arguments" ""              ""

Error in vetr:::fun_alike(identity, 10) : Arguments must be functions.

Error in vetr:::fun_alike(10, identity) : Arguments must be functions.

# Overwhelm env stack, though not that satifying a test

All contents of `env` should be environments; error  at item 1

Error in vetr:::env_track(list(1, 2, 3), 1L, 3L) : 
  All contents of `env` should be environments; error  at item 1

Error in vetr:::is_valid_name(letters) : 
  Argument `name` must be character(1L)

vetr:::pad_or_quote(quote(1 + 1), syntactic = 0L)

vetr:::pad_or_quote(quote(1 + 1), syntactic = 1L)

Internal Error: unexpected string format to merge; contact maintainer

Error in vetr:::msg_sort(list(letters[1:5], NULL)) : 
  Internal Error: unexpected string format to merge; contact maintainer

Error in vetr:::msg_sort(letters) : Expected list argument, got character

[[1]]
[1] "`my_var`"  "be"        "integer"   "is"        "character"

`attr(my_var)` should be "NULL" (is list)

`length(names(my_var))` should be 2, or 3 (is 4)

`my_var` should be "NULL", integer, or matrix (is character)

[[1]]
[1] "`attr(my_var)` should be \"NULL\" (is list)"

[[2]]
[1] "`length(names(my_var))` should be 2, or 3 (is 4)"

[[3]]
[1] "`my_var` should be \"NULL\", integer, or matrix (is character)"

[[4]]
[1] "`my_var` should have 3 columns (has 1)"

keys <- vapply(1:26, function(x) paste0(letters[seq(x)], collapse = ""), 
    character(1L))

values <- vapply(1:26, function(x) paste0(LETTERS[seq(x)], collapse = ""), 
    character(1L))

[1] "A"                          "AB"                        
 [3] "ABC"                        "ABCD"                      
 [5] "ABCDE"                      "ABCDEF"                    
 [7] "ABCDEFG"                    "ABCDEFGH"                  
 [9] "ABCDEFGHI"                  "ABCDEFGHIJ"                
[11] "ABCDEFGHIJK"                "ABCDEFGHIJKL"              
[13] "ABCDEFGHIJKLM"              "ABCDEFGHIJKLMN"            
[15] "ABCDEFGHIJKLMNO"            "ABCDEFGHIJKLMNOP"          
[17] "ABCDEFGHIJKLMNOPQ"          "ABCDEFGHIJKLMNOPQR"        
[19] "ABCDEFGHIJKLMNOPQRS"        "ABCDEFGHIJKLMNOPQRST"      
[21] "ABCDEFGHIJKLMNOPQRSTU"      "ABCDEFGHIJKLMNOPQRSTUV"    
[23] "ABCDEFGHIJKLMNOPQRSTUVW"    "ABCDEFGHIJKLMNOPQRSTUVWX"  
[25] "ABCDEFGHIJKLMNOPQRSTUVWXY"  "ABCDEFGHIJKLMNOPQRSTUVWXYZ"