diff --git a/app/actions.cpp b/app/actions.cpp
index 06285aee34..80667a500d 100644
--- a/app/actions.cpp
+++ b/app/actions.cpp
@@ -1688,8 +1688,7 @@ std::string temporaryPath() {
 
 int metacopy(const std::string& source, const std::string& tgt, Exiv2::ImageType targetType, bool preserve) {
 #ifdef EXIV2_DEBUG_MESSAGES
-  std::cerr << "actions.cpp::metacopy"
-            << " source = " << source << " target = " << tgt << '\n';
+  std::cerr << "actions.cpp::metacopy source = " << source << " target = " << tgt << '\n';
 #endif
 
   // read the source metadata
diff --git a/include/exiv2/datasets.hpp b/include/exiv2/datasets.hpp
index 5872a5c444..71854ba01c 100644
--- a/include/exiv2/datasets.hpp
+++ b/include/exiv2/datasets.hpp
@@ -39,7 +39,7 @@ struct EXIV2API DataSet {
   TypeId type_;            //!< Exiv2 default type
   uint16_t recordId_;      //!< Record id
   const char* photoshop_;  //!< Photoshop string
-};                         // struct DataSet
+};
 
 //! IPTC dataset reference, implemented as a static class.
 class EXIV2API IptcDataSets {
diff --git a/include/exiv2/matroskavideo.hpp b/include/exiv2/matroskavideo.hpp
index 6861fc4c45..234a948e9b 100644
--- a/include/exiv2/matroskavideo.hpp
+++ b/include/exiv2/matroskavideo.hpp
@@ -87,9 +87,8 @@ struct MatroskaTag {
     return _process == Composite;
   }
   void dump(std::ostream& os) const {
-    os << " MatroskaTag "
-       << " id: [0x" << std::hex << _id << "] label:[" << _label << "] type:[" << _type << "] process :[" << _process
-       << "]\n";
+    os << " MatroskaTag id: [0x" << std::hex << _id << "] label:[" << _label << "] type:[" << _type << "] process :["
+       << _process << "]\n";
   }
 };
 }  // namespace Internal
diff --git a/include/exiv2/tags.hpp b/include/exiv2/tags.hpp
index 1eae8b0abd..0950ed7230 100644
--- a/include/exiv2/tags.hpp
+++ b/include/exiv2/tags.hpp
@@ -231,7 +231,7 @@ struct EXIV2API TagInfo {
   TypeId typeId_;        //!< Type id
   int16_t count_;        //!< The number of values (not bytes!), 0=any, -1=count not known.
   PrintFct printFct_;    //!< Pointer to tag print function
-};                       // struct TagInfo
+};
 
 //! Access to Exif group and tag lists and misc. tag reference methods, implemented as a static class.
 class EXIV2API ExifTags {
diff --git a/include/exiv2/value.hpp b/include/exiv2/value.hpp
index b81f3e4676..3d17adea4c 100644
--- a/include/exiv2/value.hpp
+++ b/include/exiv2/value.hpp
@@ -468,7 +468,7 @@ class EXIV2API CommentValue : public StringValueBase {
     CharsetId charsetId_;  //!< Charset id
     const char* name_;     //!< Name of the charset
     const char* code_;     //!< Code of the charset
-  };                       // struct CharsetTable
+  };
 
   //! Charset information lookup functions. Implemented as a static class.
   class EXIV2API CharsetInfo {
diff --git a/samples/easyaccess-test.cpp b/samples/easyaccess-test.cpp
index 59e04f7c2c..5e35e56c54 100644
--- a/samples/easyaccess-test.cpp
+++ b/samples/easyaccess-test.cpp
@@ -56,7 +56,8 @@ static void printFct(EasyAccessFct fct, Exiv2::ExifData ed, const char* label) {
     std::cout << " (" << std::setw(35) << pos->key() << ") : " << pos->print(&ed) << "\n";
   } else {
     std::cout << " (" << std::setw(35) << " "
-              << ") : \n";
+              << ") : "
+              << "\n";
   }
 }
 
diff --git a/samples/getopt-test.cpp b/samples/getopt-test.cpp
index 3601fb7152..ae859dc600 100644
--- a/samples/getopt-test.cpp
+++ b/samples/getopt-test.cpp
@@ -50,22 +50,19 @@ class Params : public Util::Getopt {
    */
   int getopt(int argc, char** const argv) {
     int rc = Util::Getopt::getopt(argc, argv, ::optstring);
-    std::cout << "Params::getopt()"
-              << " rc = " << rc << '\n';
+    std::cout << "Params::getopt() rc = " << rc << '\n';
     return rc;
   }
 
   //! Handle options and their arguments.
   int option(int opt, const std::string& optarg, int optopt) override {
-    std::cout << "Params::option()"
-              << " opt = " << opt << " optarg = " << optarg << " optopt = " << optopt << '\n';
+    std::cout << "Params::option() opt = " << opt << " optarg = " << optarg << " optopt = " << optopt << '\n';
     return 0;
   }
 
   //! Handle non-option parameters.
   int nonoption(const std::string& argv) override {
-    std::cout << "Params::nonoption()"
-              << " " << argv << '\n';
+    std::cout << "Params::nonoption() " << argv << '\n';
     return 0;
   }
 };  // class Params
diff --git a/samples/ini-test.cpp b/samples/ini-test.cpp
index 67a0f5ebf9..3d39d41fcc 100644
--- a/samples/ini-test.cpp
+++ b/samples/ini-test.cpp
@@ -24,8 +24,7 @@ int main() {
     std::cerr << "Can't load '" << ini << "'" << '\n';
     return EXIT_FAILURE;
   }
-  std::cout << "Config loaded from : '" << ini << "' "
-            << "version=" << reader.GetInteger("protocol", "version", -1)
+  std::cout << "Config loaded from : '" << ini << "' version=" << reader.GetInteger("protocol", "version", -1)
             << ", name=" << reader.Get("user", "name", "UNKNOWN")
             << ", email=" << reader.Get("user", "email", "UNKNOWN") << ", pi=" << reader.GetReal("user", "pi", -1)
             << ", active=" << reader.GetBoolean("user", "active", true) << '\n';
diff --git a/samples/prevtest.cpp b/samples/prevtest.cpp
index d902d79563..1804065e1a 100644
--- a/samples/prevtest.cpp
+++ b/samples/prevtest.cpp
@@ -21,8 +21,7 @@ int main(int argc, char* const argv[]) try {
   Exiv2::PreviewManager loader(*image);
   for (const auto& pos : loader.getPreviewProperties()) {
     std::cout << pos.mimeType_ << " preview, type " << pos.id_ << ", " << pos.size_ << " bytes, " << pos.width_ << 'x'
-              << pos.height_ << " pixels"
-              << "\n";
+              << pos.height_ << " pixels\n";
 
     Exiv2::PreviewImage preview = loader.getPreviewImage(pos);
     auto s = preview.writeFile(filename + "_" + std::to_string(pos.width_) + "x" + std::to_string(pos.height_));
diff --git a/src/basicio.cpp b/src/basicio.cpp
index ece4d83f24..bc2997cc30 100644
--- a/src/basicio.cpp
+++ b/src/basicio.cpp
@@ -1482,10 +1482,7 @@ void HttpIo::HttpImpl::writeRemote(const byte* data, size_t size, size_t from, s
   const std::string urlencodeData = urlencode(encodeData.data());
 
   std::stringstream ss;
-  ss << "path=" << hostInfo_.Path << "&"
-     << "from=" << from << "&"
-     << "to=" << to << "&"
-     << "data=" << urlencodeData;
+  ss << "path=" << hostInfo_.Path << "&from=" << from << "&to=" << to << "&data=" << urlencodeData;
   std::string postData = ss.str();
 
   // create the header
@@ -1664,10 +1661,7 @@ void CurlIo::CurlImpl::writeRemote(const byte* data, size_t size, size_t from, s
   // url encode
   const std::string urlencodeData = urlencode(encodeData.data());
   std::stringstream ss;
-  ss << "path=" << hostInfo.Path << "&"
-     << "from=" << from << "&"
-     << "to=" << to << "&"
-     << "data=" << urlencodeData;
+  ss << "path=" << hostInfo.Path << "&from=" << from << "&to=" << to << "&data=" << urlencodeData;
   std::string postData = ss.str();
 
   curl_easy_setopt(curl_, CURLOPT_POSTFIELDS, postData.c_str());
diff --git a/src/bmffimage.cpp b/src/bmffimage.cpp
index 5888a11123..a945b12cce 100644
--- a/src/bmffimage.cpp
+++ b/src/bmffimage.cpp
@@ -93,8 +93,8 @@ std::string BmffImage::toAscii(uint32_t n) {
   // show 0 as _
   std::replace(result.begin(), result.end(), '\0', '_');
   // show non 7-bit printable ascii as .
-  std::replace_if(
-      result.begin(), result.end(), [](char c) { return c < 32 || c > 126; }, '.');
+  auto f = [](char c) { return c < 32 || c > 126; };
+  std::replace_if(result.begin(), result.end(), f, '.');
   return result;
 }
 
diff --git a/src/convert.cpp b/src/convert.cpp
index 626933990d..26749f9393 100644
--- a/src/convert.cpp
+++ b/src/convert.cpp
@@ -1051,8 +1051,7 @@ void Converter::cnvXmpFlash(const char* from, const char* to) {
       value |= fired & 1;
 #ifndef SUPPRESS_WARNINGS
     else
-      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Fired"
-                  << " to " << to << "\n";
+      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Fired to " << to << '\n';
 #endif
   }
   pos = xmpData_->findKey(XmpKey(std::string(from) + "/exif:Return"));
@@ -1062,8 +1061,7 @@ void Converter::cnvXmpFlash(const char* from, const char* to) {
       value |= (ret & 3) << 1;
 #ifndef SUPPRESS_WARNINGS
     else
-      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Return"
-                  << " to " << to << "\n";
+      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Return to " << to << '\n';
 #endif
   }
   pos = xmpData_->findKey(XmpKey(std::string(from) + "/exif:Mode"));
@@ -1073,8 +1071,7 @@ void Converter::cnvXmpFlash(const char* from, const char* to) {
       value |= (mode & 3) << 3;
 #ifndef SUPPRESS_WARNINGS
     else
-      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Mode"
-                  << " to " << to << "\n";
+      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Mode to " << to << '\n';
 #endif
   }
   pos = xmpData_->findKey(XmpKey(std::string(from) + "/exif:Function"));
@@ -1084,8 +1081,7 @@ void Converter::cnvXmpFlash(const char* from, const char* to) {
       value |= (function & 1) << 5;
 #ifndef SUPPRESS_WARNINGS
     else
-      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Function"
-                  << " to " << to << "\n";
+      EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:Function to " << to << '\n';
 #endif
   }
   pos = xmpData_->findKey(XmpKey(std::string(from) + "/exif:RedEyeMode"));
@@ -1096,8 +1092,7 @@ void Converter::cnvXmpFlash(const char* from, const char* to) {
         value |= (red & 1) << 6;
 #ifndef SUPPRESS_WARNINGS
       else
-        EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:RedEyeMode"
-                    << " to " << to << "\n";
+        EXV_WARNING << "Failed to convert " << std::string(from) + "/exif:RedEyeMode to " << to << '\n';
 #endif
     }
     if (erase_)
diff --git a/src/fff.h b/src/fff.h
index 25987ba298..989cdf3143 100644
--- a/src/fff.h
+++ b/src/fff.h
@@ -156,7 +156,8 @@ be considered as real pixels */
   unsigned char stripeFields;    //!< Number of striped fields this image consists of
   unsigned char reserved;        //!< For future use - should be set to 0
   unsigned short reserved1;      //!< For future use - should be set to 0
-} GEOMETRIC_INFO_T;              //!< sizeof struct == 32 bytes
+
+} GEOMETRIC_INFO_T;  //!< sizeof struct == 32 bytes
 
 struct IMAGEINFO_T {
   unsigned long imageTime;       //!< Time in seconds since 1970-01-01 00:00 (UTC)
@@ -233,6 +234,7 @@ struct DISTR_DATA_T {
 
   short reserved;  //!< For future use
   long reserved2[3];
+
 };  //!< sizeof struct == 64 bytes
 
 typedef struct _pres_par_t {
@@ -240,6 +242,7 @@ typedef struct _pres_par_t {
                         span (in pixel units) */
   signed long span;  /* Span as normalized pixel value (apix) */
   BYTE reserved[40];
+
 } PRES_PAR_T; /* sizeof struct == 48 bytes */
 
 /**
@@ -282,7 +285,8 @@ struct OBJECT_PAR_T {
 
   float relHum;      //!< relative humidity
   long reserved[4];  //!< For future use - should be set to 0
-};                   //!< sizeof struct == 48 bytes
+
+};  //!< sizeof struct == 48 bytes
 
 struct TEMP_CALIB_T {
   long Reserved1[2];
@@ -344,7 +348,8 @@ struct TEMPSENSOR_DATA_T {
   char pzTSName[SYSIMG_NAMELEN + 1];
   ULONG captureTime;       //!< TS updated; time in seconds since 1970-01-01 00:00
   ULONG captureMilliTime;  //!< TS updated; Milliseconds since last second
-};                         //!< sizeof struct == 28 bytes
+
+};  //!< sizeof struct == 28 bytes
 
 /** Detector parameter struct */
 struct DETECTOR_PARAM_T {
@@ -360,7 +365,8 @@ struct EXTENDED_IMAGEINFO_T {
   DETECTOR_PARAM_T detectorPars[20];  //!< Currently used detector parameters like
                                       //!     used bias, offsets. Usage is camera
                                       //!     dependent
-};                                    //!< sizeof struct == 960 bytes
+
+};  //!< sizeof struct == 960 bytes
 
 struct _bidata_t {
   GEOMETRIC_INFO_T GeometricInfo;  // 32 bytes
diff --git a/src/jp2image.cpp b/src/jp2image.cpp
index 9485a28643..8911817063 100644
--- a/src/jp2image.cpp
+++ b/src/jp2image.cpp
@@ -191,13 +191,12 @@ void Jp2Image::readMetadata() {
             throw Error(ErrorCode::kerCorruptedMetadata);
           }
 #ifdef EXIV2_DEBUG_MESSAGES
-          std::cout << "Exiv2::Jp2Image::readMetadata: "
-                    << "subBox = " << toAscii(subBox.type) << " length = " << subBox.length << '\n';
+          std::cout << "Exiv2::Jp2Image::readMetadata: subBox = " << toAscii(subBox.type)
+                    << " length = " << subBox.length << '\n';
 #endif
           if (subBox.type == kJp2BoxTypeColorSpec && subBox.length != 15) {
 #ifdef EXIV2_DEBUG_MESSAGES
-            std::cout << "Exiv2::Jp2Image::readMetadata: "
-                      << "Color data found" << '\n';
+            std::cout << "Exiv2::Jp2Image::readMetadata: Color data found\n";
 #endif
 
             const size_t pad = 3;  // 3 padding bytes 2 0 0
diff --git a/src/photoshop.cpp b/src/photoshop.cpp
index f05f3682e5..f87a13eae0 100644
--- a/src/photoshop.cpp
+++ b/src/photoshop.cpp
@@ -57,8 +57,7 @@ int Photoshop::locateIrb(const byte* pPsData, size_t sizePsData, uint16_t psTag,
     position += psSize;
     if (position + 4 > sizePsData) {
 #ifdef EXIV2_DEBUG_MESSAGES
-      std::cerr << "Warning: "
-                << "Invalid or extended Photoshop IRB\n";
+      std::cerr << "Warning: Invalid or extended Photoshop IRB\n";
 #endif
       return -2;
     }
@@ -66,15 +65,13 @@ int Photoshop::locateIrb(const byte* pPsData, size_t sizePsData, uint16_t psTag,
     position += 4;
     if (dataSize > (sizePsData - position)) {
 #ifdef EXIV2_DEBUG_MESSAGES
-      std::cerr << "Warning: "
-                << "Invalid Photoshop IRB data size " << dataSize << " or extended Photoshop IRB\n";
+      std::cerr << "Warning: Invalid Photoshop IRB data size " << dataSize << " or extended Photoshop IRB\n";
 #endif
       return -2;
     }
 #ifdef EXIV2_DEBUG_MESSAGES
     if ((dataSize & 1) && position + dataSize == sizePsData) {
-      std::cerr << "Warning: "
-                << "Photoshop IRB data is not padded to even size\n";
+      std::cerr << "Warning: Photoshop IRB data is not padded to even size\n";
     }
 #endif
     if (type == psTag) {
@@ -94,8 +91,7 @@ int Photoshop::locateIrb(const byte* pPsData, size_t sizePsData, uint16_t psTag,
 #endif
   if (position < sizePsData) {
 #ifdef EXIV2_DEBUG_MESSAGES
-    std::cerr << "Warning: "
-              << "Invalid or extended Photoshop IRB\n";
+    std::cerr << "Warning: Invalid or extended Photoshop IRB\n";
 #endif
     return -2;
   }
diff --git a/src/pngchunk_int.cpp b/src/pngchunk_int.cpp
index 1b38829bc2..377ec39b70 100644
--- a/src/pngchunk_int.cpp
+++ b/src/pngchunk_int.cpp
@@ -290,8 +290,7 @@ void PngChunk::parseChunkContent(Image* pImage, const byte* key, size_t keySize,
     xmpPacket.assign(arr.c_str(), arr.size());
     if (auto idx = xmpPacket.find_first_of('<'); idx != std::string::npos && idx > 0) {
 #ifndef SUPPRESS_WARNINGS
-      EXV_WARNING << "Removing " << idx << " characters "
-                  << "from the beginning of the XMP packet\n";
+      EXV_WARNING << "Removing " << idx << " characters from the beginning of the XMP packet\n";
 #endif
       xmpPacket = xmpPacket.substr(idx);
     }
diff --git a/src/pngimage.cpp b/src/pngimage.cpp
index cf936b0739..a2289ccb96 100644
--- a/src/pngimage.cpp
+++ b/src/pngimage.cpp
@@ -588,8 +588,7 @@ void PngImage::doWriteMetadata(BasicIo& outIo) {
             throw Error(ErrorCode::kerImageWriteFailed);
           }
 #ifdef EXIV2_DEBUG_MESSAGES
-          std::cout << "Exiv2::PngImage::doWriteMetadata: build eXIf"
-                    << " chunk (length: " << blob.size() << ")" << '\n';
+          std::cout << "Exiv2::PngImage::doWriteMetadata: build eXIf chunk (length: " << blob.size() << ")\n";
 #endif
         }
       }
@@ -631,8 +630,7 @@ void PngImage::doWriteMetadata(BasicIo& outIo) {
             throw Error(ErrorCode::kerImageWriteFailed);
           }
 #ifdef EXIV2_DEBUG_MESSAGES
-          std::cout << "Exiv2::PngImage::doWriteMetadata: build iCCP"
-                    << " chunk (length: " << chunkLength << ")" << '\n';
+          std::cout << "Exiv2::PngImage::doWriteMetadata: build iCCP chunk (length: " << chunkLength << ")\n";
 #endif
         }
       }
diff --git a/src/tiffvisitor_int.cpp b/src/tiffvisitor_int.cpp
index c7cc4980da..f1544d3684 100644
--- a/src/tiffvisitor_int.cpp
+++ b/src/tiffvisitor_int.cpp
@@ -304,9 +304,7 @@ void TiffDecoder::decodeIptc(const TiffEntryBase* object) {
       return;
     }
 #ifndef SUPPRESS_WARNINGS
-    EXV_WARNING << "Failed to decode IPTC block found in "
-                << "Directory Image, entry 0x83bb\n";
-
+    EXV_WARNING << "Failed to decode IPTC block found in Directory Image, entry 0x83bb\n";
 #endif
   }
 
@@ -326,9 +324,7 @@ void TiffDecoder::decodeIptc(const TiffEntryBase* object) {
       return;
     }
 #ifndef SUPPRESS_WARNINGS
-    EXV_WARNING << "Failed to decode IPTC block found in "
-                << "Directory Image, entry 0x8649\n";
-
+    EXV_WARNING << "Failed to decode IPTC block found in Directory Image, entry 0x8649\n";
 #endif
   }
 }  // TiffMetadataDecoder::decodeIptc
@@ -1235,8 +1231,7 @@ void TiffReader::readTiffEntry(TiffEntryBase* object) {
     if (p + 12 > pLast_) {
 #ifndef SUPPRESS_WARNINGS
       EXV_ERROR << "Entry in directory " << groupName(object->group())
-                << "requests access to memory beyond the data buffer. "
-                << "Skipping entry.\n";
+                << "requests access to memory beyond the data buffer. Skipping entry.\n";
 #endif
       return;
     }