Generate next filenames correctly
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a876678dea
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@ -68,12 +68,20 @@ describe("nextfile", function()
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end)
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insulate("prevfile.prevfile returns a non-numeric filename", function()
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it("should return the result of replacing the last character with the next letter of the alphabet", function()
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prevfile.prevfile = function() return "/testdir/421b.txt" end
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--it("should return the result of replacing the last character with the next letter of the alphabet", function()
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--local file = nextfile.nextfile("/testdir")
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local file = nextfile.nextfile("/testdir")
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--assert.are.equal("/testdir/421c.txt", file)
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--end)
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assert.are.equal("/testdir/421c.txt", file)
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end)
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it("should return the result of replacing z with za when z is the last letter of the filename", function()
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prevfile.prevfile = function() return "/testdir/421z.txt" end
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local file = nextfile.nextfile("/testdir")
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assert.are.equal("/testdir/421za.txt", file)
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end)
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end)
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end)
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@ -23,7 +23,8 @@ function nextfile.nextfile(directory)
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if tonumber(name) == nil then
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local lastletter = name:sub(#name)
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return dir .. name:gsub() .. ext
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local nextletter = nextfile.nextletter(lastletter)
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return dir .. name:gsub(lastletter .. "$", nextletter) .. ext
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end
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return dir .. name + 1 .. ext
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