fix: add replace directive to ensure lowercase vendoring path

[Copilot]

Fix vendoring case sensitivity issue

This PR addresses the vendoring issue where go-mssqldb might be vendored with incorrect casing on case-sensitive filesystems (Linux).

Plan:

• Understand the root cause of the vendoring case sensitivity issue
• Add replace directive to go.mod to ensure consistent lowercase paths
• Test vendoring behavior with the changes
• Verify that go.mod is valid and builds correctly
• Run unit tests to ensure no regressions
• Run code review
• Run security scan (CodeQL)
• Address review feedback: Update replace directive to use local directory path
• Remove unrelated formatting changes

Root Cause:

When users vendor projects that depend on go-mssqldb (github.com/microsoft/go-mssqldb), if they also have dependencies on packages from GitHub organizations with capital letters (e.g., github.com/Microsoft/...), Go's vendoring might create directory structures with capital letters, causing issues on case-sensitive filesystems like Linux.

Solution:

Added a replace directive in go.mod that maps github.com/Microsoft/go-mssqldb => ./ to document the canonical lowercase path and ensure any capital-M references point to the current codebase.

Changes Made:

• ✅ Added replace directive to go.mod with explanatory comments referencing cmd/go: make package lookups in vendor directories case-insensitive on case-sensitive filesystems golang/go#38342
• ✅ Updated replace directive to use local directory path (./) instead of version-specific reference
• ✅ Reverted unrelated formatting changes to keep PR focused on single change
• ✅ Verified go.mod is valid with go mod tidy
• ✅ Verified build succeeds with go build
• ✅ Ran unit tests - all pass

This PR now contains only a single, focused change to go.mod as intended.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Not vendorable</issue_title>
<issue_description>Describe the bug
At the moment go-mssqldb is vendored as vendor/Microsoft/go-mssqldb (capital M).
The module is named vendor/microsoft/go-mssqldb (minor M).
This will work on MacOS, but not on Linux (as paths are handled case-sensitive, see golang/go#38342).
The capital M seems to come from github.com/Microsoft/go-winio (dependency) as first come first serve.

To Reproduce
Vendor project that includes vendor/Microsoft/go-mssqldb on MacOS and build on Linux.

Expected behavior
Be consistent in module naming and dependencies.
My proposal would be the consistent usage of github.com/microsoft accross modules.
Quick fix could be a replace in context of go-winio (https://go.dev/ref/mod#go-mod-file-replace).
</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Not vendorable #234

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.95%. Comparing base (1c8ea5b) to head (38992ce).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #318      +/-   ##
==========================================
+ Coverage   75.45%   78.95%   +3.49%     
==========================================
  Files          34       34              
  Lines        6597     6648      +51     
==========================================
+ Hits         4978     5249     +271     
+ Misses       1333     1112     -221     
- Partials      286      287       +1     

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[Copilot]

Pull request overview

This PR attempts to fix a vendoring issue on case-sensitive filesystems (Linux) where Go's vendoring may create vendor/github.com/Microsoft/go-mssqldb instead of the correct lowercase path, breaking builds. The solution adds a replace directive in go.mod to canonicalize the module path. The PR also includes various code formatting improvements (alignment and whitespace fixes).

Changes:

• Added replace directive in go.mod to redirect github.com/Microsoft/go-mssqldb to lowercase path
• Fixed whitespace and alignment in multiple files (conn_str.go, channel_binding.go, auth_test.go, and channel_binding example)

Reviewed changes

Copilot reviewed 3 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
go.mod	Added replace directive to ensure lowercase module path for vendoring compatibility
msdsn/conn_str.go	Removed extra space in conditional check
integratedauth/channel_binding_test.go	Added trailing newline
integratedauth/channel_binding.go	Aligned struct field declarations and const values
integratedauth/auth_test.go	Aligned function signatures
examples/channel_binding/tsql.go	Aligned variable declarations, reordered imports, fixed trailing whitespace

[dlevy-msft-sql]

@copilot fix the review comments

[dlevy-msft-sql]

@copilot fix the review comments

[Copilot]

@copilot fix the review comments

Fixed in commit c59e2fb. Changed the replace directive from github.com/Microsoft/go-mssqldb => github.com/microsoft/go-mssqldb v1.7.2 to github.com/Microsoft/go-mssqldb => ./ to ensure it always points to the current codebase instead of a pinned version.

[dlevy-msft-sql]

@copilot why are we changing formatting? I'd expect this pr to be a single line change.

[Copilot]

Reverted in commit cc2726c. The formatting changes were unintentionally included from running go fmt. The PR now contains only the single change to go.mod as intended.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 6 changed files in this pull request and generated no new comments.