Git: Add a toggle button for Follow Renames on Log

Fixes: QTCREATORBUG-22826
Change-Id: I6d5075dfe16bc3c5d0914dc182523f0295379396
Reviewed-by: André Hartmann <aha_1980@gmx.de>

src/plugins/git/gitclient.cpp

@@ -635,6 +635,10 @@ public:
                                                tr("Show textual graph log."));
         mapSetting(graphButton, settings.boolPointer(GitSettings::graphLogKey));
 
+        QAction *followButton = addToggleButton("--follow", tr("Follow"),
+                                               tr("Show log also for previous names of the file."));
+        mapSetting(followButton, settings.boolPointer(GitSettings::followRenamesKey));
+
         addButton(tr("Reload"), Utils::Icons::RELOAD.icon());
     }
 };
@@ -1032,7 +1036,7 @@ void GitClient::log(const QString &workingDirectory, const QString &fileName,
     arguments << argWidget->arguments();
 
     if (!fileName.isEmpty())
-        arguments << "--follow" << "--" << fileName;
+        arguments << "--" << fileName;
 
     vcsExec(workingDir, arguments, editor);
 }

src/plugins/git/gitsettings.cpp

@@ -45,6 +45,7 @@ const QLatin1String GitSettings::logDiffKey("LogDiff");
 const QLatin1String GitSettings::repositoryBrowserCmd("RepositoryBrowserCmd");
 const QLatin1String GitSettings::graphLogKey("GraphLog");
 const QLatin1String GitSettings::firstParentKey("FirstParent");
+const QLatin1String GitSettings::followRenamesKey("FollowRenames");
 const QLatin1String GitSettings::lastResetIndexKey("LastResetIndex");
 
 GitSettings::GitSettings()
@@ -66,6 +67,7 @@ GitSettings::GitSettings()
     declareKey(repositoryBrowserCmd, QString());
     declareKey(graphLogKey, false);
     declareKey(firstParentKey, false);
+    declareKey(followRenamesKey, true);
     declareKey(lastResetIndexKey, 0);
 }
 

src/plugins/git/gitsettings.h

@@ -56,6 +56,7 @@ public:
     static const QLatin1String repositoryBrowserCmd;
     static const QLatin1String graphLogKey;
     static const QLatin1String firstParentKey;
+    static const QLatin1String followRenamesKey;
     static const QLatin1String lastResetIndexKey;
 
     Utils::FilePath gitExecutable(bool *ok = nullptr, QString *errorMessage = nullptr) const;