Add option to display commit author identity with git config source

app/src/lib/app-state.ts

@@ -1,5 +1,6 @@
 import { Account } from '../models/account'
 import { CommitIdentity } from '../models/commit-identity'
+import { IConfigValueOrigin } from './git/config'
 import { IDiff, ImageDiffType } from '../models/diff'
 import { Repository, ILocalRepositoryState } from '../models/repository'
 import { Branch, IAheadBehind } from '../models/branch'
@@ -363,6 +364,8 @@ export interface IAppState {
    */
   readonly commitSpellcheckEnabled: boolean
 
+  readonly showCommitAuthorInfo: boolean
+
   /**
    * Record of what logged in users have been checked to see if thank you is in
    * order for external contributions in latest release.
@@ -562,6 +565,9 @@ export interface IRepositoryState {
    */
   readonly commitAuthor: CommitIdentity | null
 
+  readonly commitAuthorNameOrigin: IConfigValueOrigin | null
+  readonly commitAuthorEmailOrigin: IConfigValueOrigin | null
+
   readonly branchesState: IBranchesState
 
   readonly worktreesState: IWorktreesState

app/src/lib/git/config.ts

@@ -282,3 +282,111 @@ async function removeConfigValueInPath(
 
   await git(flags, path || __dirname, 'removeConfigValueInPath', options)
 }
+
+export interface IConfigValueOrigin {
+  readonly value: string
+  readonly scope: string
+  readonly origin: string
+}
+
+/**
+ * Look up a config value along with its source file and scope.
+ * Requires Git 2.26+ for --show-scope.
+ */
+export async function getConfigValueWithOrigin(
+  repository: Repository,
+  name: string
+): Promise<IConfigValueOrigin | null> {
+  const result = await git(
+    ['config', '--show-origin', '--show-scope', '-z', name],
+    repository.path,
+    'getConfigValueWithOrigin',
+    // 0 = found, 1 = key not set, 128 = not a git repo or git error
+    { successExitCodes: new Set([0, 1, 128]) }
+  )
+
+  if (result.exitCode !== 0) {
+    return null
+  }
+
+  const parts = result.stdout.split('\0')
+  if (parts.length >= 3) {
+    return {
+      scope: parts[0],
+      origin: parts[1],
+      value: parts[2],
+    }
+  }
+
+  return null
+}
+
+/**
+ * Extract the file path from a config value origin, stripping the `file:` prefix.
+ * When repositoryPath is provided, relative paths (e.g. `.git/config` for local
+ * scope) are resolved to absolute paths.
+ */
+export function getOriginFilePath(
+  origin: IConfigValueOrigin,
+  repositoryPath?: string
+): string {
+  const filePath = origin.origin.replace(/^file:/, '')
+  // Git returns relative paths for local/worktree scope (e.g. `.git/config`)
+  if (repositoryPath && !/^([a-zA-Z]:|[/\\])/.test(filePath)) {
+    const base = repositoryPath.replace(/[\\/]+$/, '')
+    return `${base}/${filePath}`
+  }
+  return filePath
+}
+
+/**
+ * Check whether a global-scoped config value comes from a conditionally
+ * included file (via includeIf directive) rather than a standard location.
+ */
+export function isConditionalInclude(origin: IConfigValueOrigin): boolean {
+  if (origin.scope !== 'global') {
+    return false
+  }
+  const filePath = getOriginFilePath(origin)
+  return (
+    !/[/\\]\.gitconfig$/i.test(filePath) &&
+    !/[/\\]\.config[/\\]git[/\\]config$/i.test(filePath)
+  )
+}
+
+/** Format a human-readable scope description for a config value origin. */
+export function formatConfigScope(origin: IConfigValueOrigin): string {
+  if (origin.scope === 'local') {
+    return 'local'
+  } else if (origin.scope === 'system') {
+    return 'system'
+  } else if (origin.scope === 'worktree') {
+    return 'worktree'
+  } else if (origin.scope === 'global') {
+    return isConditionalInclude(origin) ? 'global, via [includeIf]' : 'global'
+  }
+  return origin.scope
+}
+
+/**
+ * Format the file path for a config value origin.
+ * For local/worktree scope, displays the path with a `<repo>` prefix.
+ */
+export function formatConfigPath(
+  origin: IConfigValueOrigin,
+  repositoryPath: string
+): string {
+  const rawPath = origin.origin.replace(/^file:/, '')
+  if (origin.scope === 'local' || origin.scope === 'worktree') {
+    // Git returns relative paths for local scope (e.g. `.git/config`)
+    if (!/^([a-zA-Z]:|[/\\])/.test(rawPath)) {
+      return '<repo>/' + rawPath
+    }
+    // Absolute path — strip repo prefix
+    const normalized = repositoryPath.replace(/[\\/]+$/, '')
+    if (rawPath.toLowerCase().startsWith(normalized.toLowerCase())) {
+      return '<repo>' + rawPath.slice(normalized.length)
+    }
+  }
+  return rawPath
+}

app/src/lib/stores/app-store.ts

@@ -301,6 +301,7 @@ import {
   installLFSHooks,
   isUsingLFS,
 } from '../git/lfs'
+import { getConfigValueWithOrigin, IConfigValueOrigin } from '../git/config'
 import { determineMergeability } from '../git/merge-tree'
 import { listWorktrees } from '../git/worktree'
 import { reorder } from '../git/reorder'
@@ -464,6 +465,9 @@ const hideWhitespaceInPullRequestDiffKey =
 const commitSpellcheckEnabledDefault = true
 const commitSpellcheckEnabledKey = 'commit-spellcheck-enabled'
 
+const showCommitAuthorInfoDefault = false
+const showCommitAuthorInfoKey = 'show-commit-author-info'
+
 export const tabSizeDefault: number = 4
 const tabSizeKey: string = 'tab-size'
 
@@ -610,6 +614,7 @@ export class AppStore extends TypedBaseStore<IAppState> {
     hideWhitespaceInPullRequestDiffDefault
   /** Whether or not the spellchecker is enabled for commit summary and description */
   private commitSpellcheckEnabled: boolean = commitSpellcheckEnabledDefault
+  private showCommitAuthorInfo: boolean = showCommitAuthorInfoDefault
   private showSideBySideDiff: boolean = ShowSideBySideDiffDefault
 
   private uncommittedChangesStrategy = defaultUncommittedChangesStrategy
@@ -1224,6 +1229,7 @@ export class AppStore extends TypedBaseStore<IAppState> {
       repositoryIndicatorsEnabled: this.repositoryIndicatorsEnabled,
       hideWindowOnQuit: this.hideWindowOnQuit,
       commitSpellcheckEnabled: this.commitSpellcheckEnabled,
+      showCommitAuthorInfo: this.showCommitAuthorInfo,
       currentDragElement: this.currentDragElement,
       lastThankYou: this.lastThankYou,
       useCustomEditor: this.useCustomEditor,
@@ -2590,6 +2596,10 @@ export class AppStore extends TypedBaseStore<IAppState> {
       commitSpellcheckEnabledKey,
       commitSpellcheckEnabledDefault
     )
+    this.showCommitAuthorInfo = getBoolean(
+      showCommitAuthorInfoKey,
+      showCommitAuthorInfoDefault
+    )
     this.showSideBySideDiff = getShowSideBySideDiff()
 
     this.selectedTheme = getPersistedThemeName()
@@ -4225,6 +4235,17 @@ export class AppStore extends TypedBaseStore<IAppState> {
     this.emitUpdate()
   }
 
+  public _setShowCommitAuthorInfo(showCommitAuthorInfo: boolean) {
+    if (this.showCommitAuthorInfo === showCommitAuthorInfo) {
+      return
+    }
+
+    setBoolean(showCommitAuthorInfoKey, showCommitAuthorInfo)
+    this.showCommitAuthorInfo = showCommitAuthorInfo
+
+    this.emitUpdate()
+  }
+
   public _setUseWindowsOpenSSH(useWindowsOpenSSH: boolean) {
     setBoolean(UseWindowsOpenSSHKey, useWindowsOpenSSH)
     this.useWindowsOpenSSH = useWindowsOpenSSH
@@ -4297,8 +4318,22 @@ export class AppStore extends TypedBaseStore<IAppState> {
         getAuthorIdentity(repository)
       )) || null
 
+    let commitAuthorNameOrigin: IConfigValueOrigin | null = null
+    let commitAuthorEmailOrigin: IConfigValueOrigin | null = null
+
+    try {
+      ;[commitAuthorNameOrigin, commitAuthorEmailOrigin] = await Promise.all([
+        getConfigValueWithOrigin(repository, 'user.name'),
+        getConfigValueWithOrigin(repository, 'user.email'),
+      ])
+    } catch (e) {
+      log.warn('Failed to get config value origins', e)
+    }
+
     this.repositoryStateCache.update(repository, () => ({
       commitAuthor,
+      commitAuthorNameOrigin,
+      commitAuthorEmailOrigin,
     }))
     this.emitUpdate()
   }

app/src/lib/stores/repository-state-cache.ts

@@ -375,6 +375,8 @@ function getInitialRepositoryState(): IRepositoryState {
     },
     pullRequestState: null,
     commitAuthor: null,
+    commitAuthorNameOrigin: null,
+    commitAuthorEmailOrigin: null,
     commitLookup: new Map<string, Commit>(),
     localCommitSHAs: [],
     localTags: null,

app/src/ui/app.tsx

@@ -1672,6 +1672,7 @@ export class App extends React.Component<IAppProps, IAppState> {
             selectedExternalEditor={this.state.selectedExternalEditor}
             useWindowsOpenSSH={this.state.useWindowsOpenSSH}
             showCommitLengthWarning={this.state.showCommitLengthWarning}
+            showCommitAuthorInfo={this.state.showCommitAuthorInfo}
             notificationsEnabled={this.state.notificationsEnabled}
             optOutOfUsageTracking={this.state.optOutOfUsageTracking}
             useExternalCredentialHelper={this.state.useExternalCredentialHelper}
@@ -3735,6 +3736,7 @@ export class App extends React.Component<IAppProps, IAppState> {
           aheadBehindStore={this.props.aheadBehindStore}
           commitSpellcheckEnabled={this.state.commitSpellcheckEnabled}
           showCommitLengthWarning={this.state.showCommitLengthWarning}
+          showCommitAuthorInfo={this.state.showCommitAuthorInfo}
           onCherryPick={this.startCherryPickWithoutBranch}
           pullRequestSuggestedNextAction={state.pullRequestSuggestedNextAction}
           showChangesFilter={state.showChangesFilter}