R Under development (unstable) (2025-04-19 r88162 ucrt) -- "Unsuffered Consequences"
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> NAME <- "limit"
> source(file.path('_helper', 'init.R'))
> 
> # - Simple limit ---------------------------------------------------------------
> 
> A <- B <- letters[1:5]
> B[2] <- "B"
> B[6] <- "F"
> # diffChr(A, B)
> all.equal(as.character(diffChr(A, B, line.limit=2)), rdsf(100))
[1] TRUE
> all.equal(as.character(diffChr(A, B, line.limit=3)), rdsf(200))
[1] TRUE
> 
> # - More Extensive Limits ------------------------------------------------------
> 
> Puromycin2 <- Puromycin
> set.seed(1)
> Puromycin2$conc[c(8, 15:19, 22)] <- round(runif(7), 2)
> Puromycin2$state[17] <- "treated"
> 
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin2, line.limit=15, mode="sidebyside")
+   ),
+   rdsf(300)
+ )
[1] TRUE
> 
> # # Not working right
> # diffPrint(Puromycin, Puromycin2, line.limit=15, mode="context")
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin2, line.limit=15, mode="unified")
+   ),
+   rdsf(500)
+ )
[1] TRUE
> 
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin2, line.limit=5, mode="sidebyside")
+   ),
+   rdsf(600)
+ )
[1] TRUE
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin2, line.limit=5, mode="context")
+   ),
+   rdsf(700)
+ )
[1] TRUE
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin2, line.limit=5, mode="unified")
+   ),
+   rdsf(800)
+ )
[1] TRUE
> 
> Puromycin3 <- Puromycin2
> names(Puromycin3)[3L] <- "blargh"
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin3, line.limit=7, mode="sidebyside")
+   ),
+   rdsf(900)
+ )
[1] TRUE
> all.equal(
+   as.character(
+     diffPrint(Puromycin, Puromycin3, line.limit=6, mode="context")
+   ),
+   rdsf(1000)
+ )
[1] TRUE
> # - Dual limit values ----------------------------------------------------------
> 
> A <- letters[1:10]
> B <- LETTERS[1:10]
> all.equal(
+   as.character(diffChr(A, B, line.limit=c(10, 3))), rdsf(1100)
+ )
[1] TRUE
> all.equal(
+   as.character(diffChr(A, B, line.limit=c(13, 3))), rdsf(1200)
+ )
[1] TRUE
> try(diffChr(A, B, line.limit=c(3, 13))) # "larger than or"
Error in diffChr(target = A, current = B, line.limit = c(3, 13)) : 
  Argument `line.limit` must be an integer vector of length 1 or 2 and if length 2, with the first value larger than or equal to the second, or "auto" or the result of calling `auto_line_limit`
> 
> # - Cause errors ---------------------------------------------------------------
> 
> try(diffChr(letters, LETTERS, line.limit=1:3)) # "vector of length"
Error in diffChr(target = letters, current = LETTERS, line.limit = 1:3) : 
  Argument `line.limit` must be an integer vector of length 1 or 2 and if length 2, with the first value larger than or equal to the second, or "auto" or the result of calling `auto_line_limit`
> 
> # - Vanishing header -----------------------------------------------------------
> 
> # issue 64
> all.equal(
+   as.character(
+     diffChr(
+       letters, letters[-13], context=auto_context(0, 10), line.limit=1L,
+       pager="off"
+   ) ),
+   rdsf(1300)
+ )
[1] TRUE
> 
> 
> proc.time()
   user  system elapsed 
   1.62    0.10    1.73