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Vendor the Levenshtein distance function from the REPL stdlib #356

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Merged
andreasnoack merged 3 commits into from
Nov 13, 2026
+19 −4
Merged

Vendor the Levenshtein distance function from the REPL stdlib #356

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cc868b7
Vendor the Levenshtein distance function from the REPL stdlib
DilumAluthge Nov 13, 2026
ea11222
Don't import `REPL`
DilumAluthge Nov 13, 2026
53d7bbc
Remove `REPL` from the dependency graph
DilumAluthge Nov 13, 2026
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2 changes: 0 additions & 2 deletions Project.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@ DataAPI = "9a962f9c-6df0-11e9-0e5d-c546b8b5ee8a"
DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
REPL = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
ShiftedArrays = "1277b4bf-5013-50f5-be3d-901d8477a67a"
SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
StatsAPI = "82ae8749-77ed-4fe6-ae5f-f523153014b0"
Expand All @@ -23,7 +22,6 @@ DataFrames = "1"
DataStructures = "0.17, 0.18, 0.19"
LinearAlgebra = "<0.0.1, 1"
Printf = "<0.0.1, 1"
REPL = "<0.0.1, 1"
ShiftedArrays = "1, 2"
SparseArrays = "<0.0.1, 1"
Statistics = "1"
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2 changes: 0 additions & 2 deletions src/StatsModels.jl
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Expand Up @@ -17,8 +17,6 @@ using LinearAlgebra

using Tables: ColumnTable

using REPL: levenshtein

export
#reexport from StatsBase:
StatisticalModel,
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19 changes: 19 additions & 0 deletions src/errormessages.jl
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Original file line number Diff line number Diff line change
@@ -1,3 +1,22 @@
# Levenshtein distance
# Copied from the REPL stdlib in JuliaLang/julia (license is MIT: https://julialang.org/license)
function levenshtein(s1, s2)
a, b = collect(s1), collect(s2)
m = length(a)
n = length(b)
d = Matrix{Int}(undef, m+1, n+1)

d[1:m+1, 1] = 0:m
d[1, 1:n+1] = 0:n

for i = 1:m, j = 1:n
d[i+1,j+1] = min(d[i , j+1] + 1,
d[i+1, j ] + 1,
d[i , j ] + (a[i] != b[j]))
end

return d[m+1, n+1]
end

"""
This is borrowed from [DataFrames.jl]().
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