set maxbufsize=start if start is larger than max

[kazeburo]

PR Type

Bug fix, Tests

---

Description

• Ensure maximum buffer size meets starting size

• Update expansion limit test configuration

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Diagram Walkthrough

flowchart LR
  Options["Scanner options"] --> Normalize["Normalize maximum buffer size"]
  Normalize --> Buffer["Initialize scanner buffer"]
  Tests["Buffer expansion tests"] --> Validation["Verify maximum-size errors"]

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File Walkthrough

	Relevant files
Bug fix	linebuf.go Normalize scanner buffer size limits                                          linebuf.go Ensures MaxBufSize is at least StartBufSize. Prevents invalid buffer configuration during initialization. +1/-0
Tests	linebuf_test.go Correct maximum buffer expansion test                                        linebuf_test.go Configures both starting and maximum sizes. Verifies expansion rejects tokens at the limit. +1/-1

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[github-actions]

Benchmark Comparison

Base: main
PR: fix/readme

BenchmarkScan results

goos: linux
goarch: amd64
pkg: github.com/monitoring-forge/linebuf
cpu: AMD EPYC 9V74 80-Core Processor                
               │ base-bench.txt │            pr-bench.txt            │
               │     sec/op     │   sec/op     vs base               │
Scan_bufio-4        151.6µ ± 5%   152.1µ ± 2%       ~ (p=0.754 n=10)
Scan_linebuf-4      127.1µ ± 1%   122.4µ ± 1%  -3.65% (p=0.001 n=10)
Scan_iter-4         135.2µ ± 2%   134.2µ ± 0%       ~ (p=0.123 n=10)
geomean             137.6µ        135.7µ       -1.36%

               │ base-bench.txt │             pr-bench.txt              │
               │      B/op      │     B/op      vs base                 │
Scan_bufio-4       4.000Ki ± 0%   4.000Ki ± 0%       ~ (p=1.000 n=10) ¹
Scan_linebuf-4     4.062Ki ± 0%   4.062Ki ± 0%       ~ (p=1.000 n=10) ¹
Scan_iter-4        4.078Ki ± 0%   4.078Ki ± 0%       ~ (p=1.000 n=10) ¹
geomean            4.047Ki        4.047Ki       +0.00%
¹ all samples are equal

               │ base-bench.txt │            pr-bench.txt             │
               │   allocs/op    │ allocs/op   vs base                 │
Scan_bufio-4         1.000 ± 0%   1.000 ± 0%       ~ (p=1.000 n=10) ¹
Scan_linebuf-4       2.000 ± 0%   2.000 ± 0%       ~ (p=1.000 n=10) ¹
Scan_iter-4          3.000 ± 0%   3.000 ± 0%       ~ (p=1.000 n=10) ¹
geomean              1.817        1.817       +0.00%
¹ all samples are equal

[github-actions]

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⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ No major issues detected

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ No major issues detected

[github-actions]

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