sequtils.delete and system.delete inconsistencies when index out of bounds

[koranza]

The delete proc for seqs is defined in system and sequtils.

The difference is that the definition from system takes 1 parameter for the index to delete whereas the definition from sequtils takes 2 parameters which represent the range of indices to delete (inclusive)

Since the range is inclusive, you would expect both results below to be the same

Example

import sequtils

var ones: seq[string] 

echo "-- delete at index 50 ---"

ones = @["one"]
ones.delete(50)           # unexpected: shouldn't delete anything since index 50 is out of bounds
echo repr ones

ones = @["one"]
ones.delete(50,50)        # unexpected: should be the same thing as delete(50)
echo repr ones

Current Output

-- delete at index 50 ---
@[]
@["one", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", ""]

Expected Output

@["one"]
@["one"]

Suggestions

Make deleting an out of bounds index return the same exact array, unmodified. (Or possibly throw an error)
Possibly make the proc return a bool if the array was modified using the discardable pragma so that its ignored by default

The documentation should say what happens for edge cases like when a parameter is out of bounds for the seq

Additional Information

$ nim -v
Nim Compiler Version 0.20.2