[ISSUE]: {BranchName} format strings for label not working

[moppa]

Prerequisites

• I have written a descriptive issue title
• I have searched issues to ensure it has not already been reported

GitVersion package

GitVersion.Tool

GitVersion version

6.7.0+Branch.main.Sha.00e59b5f45fe97e2e610a480a860b3a009db9602

Operating system

Windows

What are you seeing?

Format strings described on https://gitversion.net/docs/reference/custom-formatting does not work for label {BranchName} customization.

Specifying one of the format string for the BranchName regex does not print the variable with the expected formatting - but instead prints the string literal.

What is expected?

With the following configuration I expected the PascalCase formatting to be applied to BranchName like the documentation example

branches:
feature:
label: "{BranchName:c}"

On branch feature/My-New-feat

PreReleaseLabel: MyNewFeat

Steps to Reproduce

Using sample config from https://gitversion.net/docs/reference/custom-formatting "String Case Transformations"

GitVersion.yaml

branches:
  feature:
    label: "{BranchName:c}"  # PascalCase: "feature-branch" → "FeatureBranch"

# git status
On branch feature/My-New-feat
nothing to commit, working tree clean

# dotnet-gitversion /config GitVersion.yaml

{
  "AssemblySemFileVer": "1.0.277.0",
  "AssemblySemVer": "1.0.277.0",
  "BranchName": "feature/My-New-feat",
  "BuildMetaData": 484,
  "CommitDate": "2026-06-15",
  "CommitsSinceVersionSource": 484,
  "EscapedBranchName": "feature-My-New-feat",
  "FullBuildMetaData": "484.Branch.feature-My-New-feat.Sha.eec93a8ec338c7bd6928e69cc8981cba309e8408",
  "FullSemVer": "1.0.277-{BranchName:c}.1+484",
  "InformationalVersion": "1.0.277-{BranchName:c}.1+484.Branch.feature-My-New-feat.Sha.eec93a8ec338c7bd6928e69cc8981cba309e8408",
  "Major": 1,
  "MajorMinorPatch": "1.0.277",
  "Minor": 0,
  "Patch": 277,
  "PreReleaseLabel": "{BranchName:c}",
  "PreReleaseLabelWithDash": "-{BranchName:c}",
  "PreReleaseNumber": 1,
  "PreReleaseTag": "{BranchName:c}.1",
  "PreReleaseTagWithDash": "-{BranchName:c}.1",
  "SemVer": "1.0.277-{BranchName:c}.1",
  "Sha": "eec93a8ec338c7bd6928e69cc8981cba309e8408",
  "ShortSha": "eec93a8",
  "UncommittedChanges": 0,
  "VersionSourceDistance": 484,
  "VersionSourceIncrement": "None",
  "VersionSourceSemVer": "0.0.0",
  "VersionSourceSha": "",
  "WeightedPreReleaseNumber": 30001
}

RepositoryFixture Test

No response

Output log or link to your CI build (if appropriate).

[arturcic]

@moppa I think you need to wait for the release of #4944

[moppa]

@arturcic I'm more than happy to wait for #4944 !
However I expected this to already be implemented since it has been referenced by the documentation since it was draft. Is this a case of documentation not being up-to-date, or have I misunderstood something?

Will I be able to use additional variables from https://gitversion.net/docs/reference/variables in the label field with #4944 as well as the format strings mentioned on https://gitversion.net/docs/reference/custom-formatting?
For example: "{ShortSha}-{BranchName:l}"

[arturcic]

@robertcoltheart do you mind checking this one?

[robertcoltheart]

Can confirm this is definitely an issue in the current version, if you can reopen this. I'll have it addressed in the follow-up PR for #4944