Overhaul seq() to be more full-featured and less buggy #202

MichaelChirico · 2026-01-02T08:01:20Z

Closes #47

(committed by mistake directly to main: a51cf9d)

MichaelChirico · 2026-01-04T23:40:47Z

Here are the 47 failures of the updated suite on main. Most important to look at are cases where the value differs vs. main -- cases where main errors but this branch does not are not a back-compatibility concern.

Details

── Error (test-seq.R:5:5): seq method works analogously to integer: 1 argument (except along.with); n=0 ──
Error in `seq.integer64(n64)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(seq(n64), as.integer64(seq(n))) at test-seq.R:5:5
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n64)
 6. └─bit64::seq.integer64(n64)

── Error (test-seq.R:5:5): seq method works analogously to integer: 1 argument (except along.with); n=5 ──
Error in `seq.integer64(n64)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(seq(n64), as.integer64(seq(n))) at test-seq.R:5:5
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n64)
 6. └─bit64::seq.integer64(n64)

── Error (test-seq.R:5:5): seq method works analogously to integer: 1 argument (except along.with); n=-1 ──
Error in `seq.integer64(n64)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(seq(n64), as.integer64(seq(n))) at test-seq.R:5:5
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n64)
 6. └─bit64::seq.integer64(n64)

── Error (test-seq.R:30:7): seq method works analogously to integer: 2 arguments (except along.with) n1=0, n2=0 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, by = n2), err_msg, fixed = TRUE) at test-seq.R:30:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, by = n2)
 9. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:30:7): seq method works analogously to integer: 2 arguments (except along.with) n1=5, n2=0 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, by = n2), err_msg, fixed = TRUE) at test-seq.R:30:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, by = n2)
 9. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:30:7): seq method works analogously to integer: 2 arguments (except along.with) n1=-1, n2=0 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, by = n2), err_msg, fixed = TRUE) at test-seq.R:30:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, by = n2)
 9. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:33:7): seq method works analogously to integer: 2 arguments (except along.with) n1=0, n2=5 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:33:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, by = n2)
 6. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:38:7): seq method works analogously to integer: 2 arguments (except along.with) n1=5, n2=5 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(...) at test-seq.R:38:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, by = n2)
 9. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:33:7): seq method works analogously to integer: 2 arguments (except along.with) n1=-1, n2=5 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:33:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, by = n2)
 6. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:38:7): seq method works analogously to integer: 2 arguments (except along.with) n1=0, n2=-1 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(...) at test-seq.R:38:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, by = n2)
 9. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:33:7): seq method works analogously to integer: 2 arguments (except along.with) n1=5, n2=-1 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:33:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, by = n2)
 6. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:38:7): seq method works analogously to integer: 2 arguments (except along.with) n1=-1, n2=-1 ──
Error in `seq.integer64(n1_64, by = n2)`: not enough information provided
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(...) at test-seq.R:38:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, by = n2)
 9. └─bit64::seq.integer64(n1_64, by = n2)

── Error (test-seq.R:71:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=0, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:71:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, n2, by = n3)
 6. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=0, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=0, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=5, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:71:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=5, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:71:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, n2, by = n3)
 6. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=5, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=-1, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=-1, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:71:7): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=-1, n3=0 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:71:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, n2, by = n3)
 6. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Failure (test-seq.R:88:9): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=0, n3=5 ──
Expected `seq(n1_64, n2, length.out = n3)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "0" "1" "2" "3" "4"
`expected`: "0" "0" "0" "0" "0"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:88:9

── Failure (test-seq.R:89:9): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=0, n3=5 ──
Expected `seq(n1_64, n2_64, length.out = n3)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "0" "1" "2" "3" "4"
`expected`: "0" "0" "0" "0" "0"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:89:9

── Failure (test-seq.R:90:9): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=0, n3=5 ──
Expected `seq(n1_64, n2, length.out = n3_64)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "0" "1" "2" "3" "4"
`expected`: "0" "0" "0" "0" "0"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:90:9

── Failure (test-seq.R:91:9): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=0, n3=5 ──
Expected `seq(n1_64, n2_64, length.out = n3_64)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "0" "1" "2" "3" "4"
`expected`: "0" "0" "0" "0" "0"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:91:9

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=0, n3=5 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Failure (test-seq.R:88:9): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=5, n3=5 ──
Expected `seq(n1_64, n2, length.out = n3)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "5" "6" "7" "8" "9"
`expected`: "5" "5" "5" "5" "5"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:88:9

── Failure (test-seq.R:89:9): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=5, n3=5 ──
Expected `seq(n1_64, n2_64, length.out = n3)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "5" "6" "7" "8" "9"
`expected`: "5" "5" "5" "5" "5"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:89:9

── Failure (test-seq.R:90:9): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=5, n3=5 ──
Expected `seq(n1_64, n2, length.out = n3_64)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "5" "6" "7" "8" "9"
`expected`: "5" "5" "5" "5" "5"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:90:9

── Failure (test-seq.R:91:9): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=5, n3=5 ──
Expected `seq(n1_64, n2_64, length.out = n3_64)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "5" "6" "7" "8" "9"
`expected`: "5" "5" "5" "5" "5"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:91:9

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=-1, n3=5 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=-1, n3=5 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Failure (test-seq.R:88:9): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=-1, n3=5 ──
Expected `seq(n1_64, n2, length.out = n3)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "-1" " 0" " 1" " 2" " 3"
`expected`: "-1" "-1" "-1" "-1" "-1"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:88:9

── Failure (test-seq.R:89:9): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=-1, n3=5 ──
Expected `seq(n1_64, n2_64, length.out = n3)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "-1" " 0" " 1" " 2" " 3"
`expected`: "-1" "-1" "-1" "-1" "-1"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:89:9

── Failure (test-seq.R:90:9): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=-1, n3=5 ──
Expected `seq(n1_64, n2, length.out = n3_64)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "-1" " 0" " 1" " 2" " 3"
`expected`: "-1" "-1" "-1" "-1" "-1"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:90:9

── Failure (test-seq.R:91:9): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=-1, n3=5 ──
Expected `seq(n1_64, n2_64, length.out = n3_64)` to be identical to `as.integer64(seq(n1, n2, length.out = n3))`.
Differences:
`actual`:   "-1" " 0" " 1" " 2" " 3"
`expected`: "-1" "-1" "-1" "-1" "-1"

Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. └─testthat::expect_identical(...) at test-seq.R:91:9

── Error (test-seq.R:71:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=0, n3=-1 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:71:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, n2, by = n3)
 6. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:82:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=0, n3=-1 ──
Error in `double(as.integer(length.out))`: invalid 'length' argument
Backtrace:
     ▆
  1. ├─rlang::eval_tidy(code, args)
  2. ├─testthat::expect_error(...) at test-seq.R:82:7
  3. │ └─testthat:::expect_condition_matching_(...)
  4. │   └─testthat:::quasi_capture(...)
  5. │     ├─testthat (local) .capture(...)
  6. │     │ └─base::withCallingHandlers(...)
  7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
  8. ├─base::seq(n1_64, n2, length.out = n3)
  9. └─bit64::seq.integer64(n1_64, n2, length.out = n3)
 10.   └─base::double(as.integer(length.out)) at bit64/R/integer64.R:1073:3

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=0, n3=-1 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=5, n3=-1 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:71:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=5, n3=-1 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:71:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, n2, by = n3)
 6. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:77:7): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=5, n3=-1 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_error(seq(n1_64, n2, by = n3), err_msg, fixed = TRUE) at test-seq.R:77:7
 3. │ └─testthat:::expect_condition_matching_(...)
 4. │   └─testthat:::quasi_capture(...)
 5. │     ├─testthat (local) .capture(...)
 6. │     │ └─base::withCallingHandlers(...)
 7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
 8. ├─base::seq(n1_64, n2, by = n3)
 9. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Error (test-seq.R:82:7): seq method works analogously to integer: 3 arguments (except along.with) n1=0, n2=-1, n3=-1 ──
Error in `double(as.integer(length.out))`: invalid 'length' argument
Backtrace:
     ▆
  1. ├─rlang::eval_tidy(code, args)
  2. ├─testthat::expect_error(...) at test-seq.R:82:7
  3. │ └─testthat:::expect_condition_matching_(...)
  4. │   └─testthat:::quasi_capture(...)
  5. │     ├─testthat (local) .capture(...)
  6. │     │ └─base::withCallingHandlers(...)
  7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
  8. ├─base::seq(n1_64, n2, length.out = n3)
  9. └─bit64::seq.integer64(n1_64, n2, length.out = n3)
 10.   └─base::double(as.integer(length.out)) at bit64/R/integer64.R:1073:3

── Error (test-seq.R:82:7): seq method works analogously to integer: 3 arguments (except along.with) n1=5, n2=-1, n3=-1 ──
Error in `double(as.integer(length.out))`: invalid 'length' argument
Backtrace:
     ▆
  1. ├─rlang::eval_tidy(code, args)
  2. ├─testthat::expect_error(...) at test-seq.R:82:7
  3. │ └─testthat:::expect_condition_matching_(...)
  4. │   └─testthat:::quasi_capture(...)
  5. │     ├─testthat (local) .capture(...)
  6. │     │ └─base::withCallingHandlers(...)
  7. │     └─rlang::eval_bare(quo_get_expr(.quo), quo_get_env(.quo))
  8. ├─base::seq(n1_64, n2, length.out = n3)
  9. └─bit64::seq.integer64(n1_64, n2, length.out = n3)
 10.   └─base::double(as.integer(length.out)) at bit64/R/integer64.R:1073:3

── Error (test-seq.R:71:7): seq method works analogously to integer: 3 arguments (except along.with) n1=-1, n2=-1, n3=-1 ──
Error in `seq.integer64(n1_64, n2, by = n3)`: wrong sign of 'by' argument
Backtrace:
    ▆
 1. ├─rlang::eval_tidy(code, args)
 2. ├─testthat::expect_identical(...) at test-seq.R:71:7
 3. │ └─testthat::quasi_label(enquo(object), label)
 4. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 5. ├─base::seq(n1_64, n2, by = n3)
 6. └─bit64::seq.integer64(n1_64, n2, by = n3)

── Failure (test-seq.R:111:3): seq method works analogously to integer: 4 arguments ──
Expected `seq(n, n, by = n, length.out = n)` to throw a error.

── Failure (test-seq.R:112:3): seq method works analogously to integer: 4 arguments ──
Expected `seq(n, n, by = n, along.with = n)` to throw a error.
[ FAIL 47 | WARN 0 | SKIP 0 | PASS 102 ]

MichaelChirico · 2026-01-05T01:38:11Z

Analysis (using 1LL to be as.integer64(1) for conciseness)

Here are changes to error cases on main

On main, seq(1LL, 1, 1, 1) is not an error. I think it's fine to break compatibility here.
On main, seq(1LL, 1, by=-1) is an error. by= doesn't matter if to==from.
This branch improves the error message for seq(1LL, 10, by=-1) (Error in double(as.integer(length.out)) : invalid 'length' argument to 'length.out' must be a non-negative")
This branch makes a minor edit to error message of seq(1LL, -1, by=1) (wrong sign of 'by' argument to wrong sign in 'by' argument)
This branch syncs the error message of seq(1LL, 2, by=0) (wrong sign of 'by' argument to invalid '(to - from)/by')
This branch assumes from=1 and to=1 in seq(10LL, by=-1), seq(to=10LL, by=1), seq(10LL), and seq(by = 3LL) which matches seq(). Also that seq(1LL, length.out=50L) means 1LL:50LL, and seq(to=50LL, length.out=50L) means the same.
seq(1LL, by=8, length.out=0) now gives an empty return
seq(to = -1LL) gave an error

Here are changes to actual output values:

seq.integer64() would ignore from/to for an implied constant sequence of specified length:

one = as.integer64(1)

seq(1, 1, length.out=10) # rep(1, 10)
seq(one, one, length.out=10) # main: 1LL:10LL; this branch: rep(1LL, 10L)

seq.integer64() would ignore length.out=0

## two arguments
seq(to=5, length.out=0) # integer()
seq(to=as.integer64(5L), length.out=0) # main: 1LL:5LL; this branch: integer64()

## three arguments
seq(5, 4, length.out=0) # integer()
seq(one, 2, length.out=0L) # main: 1LL:2LL; this branch: integer64()

seq.integer64(to = 0LL) gives empty output

seq(to = 0) # 1:0
seq(to = as.integer64(0L)) # main: integer64(); this branch: 1LL:0LL

MichaelChirico · 2026-01-05T01:41:10Z

Need some more tests for double inputs:

seq(as.integer64(1), 20, by=1.5)

## main
# integer64
#  [1] 1  2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19 20

## this PR
# integer64
#  [1] 1  2  3  4  5  6  7  8  9  10 11 12 13

Also more skipped cases, for now, related to mixed integer64+double arithmetic.

MichaelChirico added 10 commits January 1, 2026 23:52

Fix seq(a, b, length.out=n)

b45345f

starting full test suite

101637d

Merge branch 'main' into seq-length-out

94ed368

complete initial combinatorial suite of tests

e41a441

starting progress implementing

15e741d

progress by ignoring along.with for now

3401541

Merge branch 'main' into seq-length-out

916048e

basic outline done, progress winnowing down expected errors

ae25958

more progress, edge case handling

b81838a

suite passing

e033db6

MichaelChirico marked this pull request as ready for review January 4, 2026 21:25

no patrick:: for ancient

5ac6205

MichaelChirico added 3 commits January 4, 2026 21:47

Mix in some cases mixing fractions

872f6ee

Also more skipped cases, for now, related to mixed integer64+double arithmetic.

Some back-compatibility tests

1029904

intermediate

d879663

MichaelChirico mentioned this pull request Jan 5, 2026

re-roxygenize under 7.3.3 #213

Merged

MichaelChirico added 5 commits January 4, 2026 23:46

Merge branch 'main' into seq-length-out

2c8cfe9

Merge branch 'main' into seq-length-out

b09c4fd

more back-compatibility tests

6bb895e

document, fix new bug

acb2c3e

NEWS

92089d0

MichaelChirico changed the title ~~Fix seq(a, b, length.out=n)~~ Overhaul seq() to be more full-featured and less buggy Jan 5, 2026

Correct issue citation

c647024

MichaelChirico merged commit 5811cba into main Jan 5, 2026
8 checks passed

MichaelChirico deleted the seq-length-out branch January 5, 2026 09:11

hcirellu mentioned this pull request Jan 8, 2026

Overhaul seq() to be more full-featured and R consistent - part II #224

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Overhaul seq() to be more full-featured and less buggy #202

Overhaul seq() to be more full-featured and less buggy #202

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seq.integer64() would ignore from/to for an implied constant sequence of specified length:

seq.integer64() would ignore length.out=0

seq.integer64(to = 0LL) gives empty output

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