Merge branch 'ncmpcpp:master' into master

2024-08-25 21:35:43 -04:00
parent c7593a2087 510e28c65a
commit 4b9eb741ea
33 changed files with 321 additions and 211 deletions
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -3,7 +3,7 @@ name: Bug report
 about: Create a report to help us improve
 title: "[BUG]"
 labels: bug
-assignees: larson-carter
+assignees:

 ---

--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -3,7 +3,7 @@ name: Feature request
 about: Suggest an idea for this project
 title: "[FEATURE]"
 labels: enhancement
-assignees: larson-carter
+assignees:

 ---

--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,22 @@
 * Separate chunks of lyrics with a double newline.
 * Fix separator between albums with the same name, to check for album artist
  instead of artist.
+* Column widths are now configurable via `media_library_column_width_ratio_two`,
+  `media_library_column_width_ratio_three` and
+  `playlist_editor_column_width_ratio`.
+* Removed deprecated `visualizer_fifo_path` and `visualizer_sync_interval`
+  options.
+* Added support for italic text.
+* Framerate limit for visualizer was removed.
+* Performer tag is now read from the `TPE4` frame instead of `TPE3`.
+* Potential crash when fetching lyrics for streams in the background was fixed.
+* Seeking now accepts the `hh:mm:ss` format.
+* Tag editor now only writes to files with modified tags.
+* Column view can now display full filepaths.
+* Updated the list of working lyrics fetchers.
+* Add `visualizer_spectrum_smooth_look_legacy_chars` option (enabled by default)
+  for potentially improved bottom part of the spectrum visualizer in terminals
+  with transparent background.

 # ncmpcpp-0.9.2 (2021-01-24)
 * Revert suppression of output of all external commands as that makes e.g album
--- a/README.md
+++ b/README.md
@@ -1,11 +1,8 @@
 # NCurses Music Player Client (Plus Plus)

-Project page - https://rybczak.net/ncmpcpp/
-
 ## ncmpcpp – featureful ncurses based MPD client inspired by ncmpc

 ### Main features:
-
 * tag editor
 * playlist editor
 * easy to use search engine
@@ -18,19 +15,18 @@ Project page - https://rybczak.net/ncmpcpp/
 …and a lot more minor functions.

 ### Dependencies:
-
-* boost library [https://www.boost.org/]
-* ncurses library [http://www.gnu.org/software/ncurses/ncurses.html]
-* readline library [https://tiswww.case.edu/php/chet/readline/rltop.html]
-* curl library (optional, required for fetching lyrics and last.fm data) [https://curl.haxx.se/]
-* fftw library (optional, required for frequency spectrum music visualization mode) [http://www.fftw.org/]
-* tag library (optional, required for tag editing) [https://taglib.org/]
+* [boost](https://www.boost.org/)
+* [ncurses](https://invisible-island.net/ncurses/announce.html)
+* [readline](https://tiswww.case.edu/php/chet/readline/rltop.html)
+* [curl](https://curl.se), for fetching lyrics and last.fm data
+#### Optional libraries
+* [fftw](http://www.fftw.org), for frequency spectrum music visualization mode
+* [taglib](https://taglib.org/), for tag editing

 ### Known issues:
 * No full support for handling encodings other than UTF-8.

 ### Installation:
-
 The simplest way to compile this package is:

  1. `cd` to the directory containing the package's source code.
@@ -55,7 +51,6 @@ The simplest way to compile this package is:
 Detailed intallation instructions can be found in the `INSTALL` file. 

 ### Optional features:
-
 Optional features can be enable by specifying them during configure. For
 example, to enable visualizer run `./configure --enable-visualizer`. 

--- a/configure.ac
+++ b/configure.ac
@@ -1,15 +1,15 @@
-AC_INIT([ncmpcpp], [0.10_dev])
+AC_INIT([ncmpcpp],[0.10_dev])
 AC_CONFIG_SRCDIR([configure.ac])
 AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE([subdir-objects])

 AC_CONFIG_MACRO_DIR([m4])

-AC_PREREQ(2.59)
+AC_PREREQ([2.71])

-AC_LANG_CPLUSPLUS
+AC_LANG([C++])
 AC_PROG_CXX
-AC_PROG_LIBTOOL
+LT_INIT

 AC_ARG_ENABLE(outputs, AS_HELP_STRING([--enable-outputs], [Enable outputs screen @<:@default=no@:>@]), [outputs=$enableval], [outputs=no])
 AC_ARG_ENABLE(visualizer, AS_HELP_STRING([--enable-visualizer], [Enable music visualizer screen @<:@default=no@:>@]), [visualizer=$enableval], [visualizer=no])
@@ -70,15 +70,15 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]])],
 )
 CXXFLAGS="$old_CXXFLAGS $fast_math"

-# -std=c++14
-AC_MSG_CHECKING([whether compiler supports -std=c++14])
+# -std=c++20
+AC_MSG_CHECKING([whether compiler supports -std=c++20])
 old_CXXFLAGS="$CXXFLAGS"
-CXXFLAGS="-std=c++14"
+CXXFLAGS="-std=c++20"
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]])],
 	AC_MSG_RESULT([yes])
-		std_cpp14="-std=c++14",
+		std_cpp14="-std=c++20",
 	AC_MSG_RESULT([no])
-		AC_MSG_ERROR([[Your compiler doesn't seem to support C++14, please upgrade (GCC >= 5)]])
+		AC_MSG_ERROR([[Your compiler doesn't seem to support C++20, please upgrade]])
 )
 CXXFLAGS="$old_CXXFLAGS $std_cpp14"

@@ -90,6 +90,9 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[auto f = [](auto n) { return n*n; }; f(
 		AC_MSG_ERROR([[Your compiler doesn't seem to support generic lambda expressions, please upgrade (GCC >= 5)]])
 )

+# warnings
+CXXFLAGS="$CXXFLAGS -Wall -Wextra -Wshadow -Wimplicit-fallthrough"
+
 # boost
 BOOST_REQUIRE([1.60])
 AC_SUBST(BOOST_CPPFLAGS)
@@ -149,7 +152,7 @@ PKG_CHECK_MODULES([ICU], [icu-i18n icu-uc], [
 	old_LIBS="$LIBS"
 	AC_SUBST(ICU_CFLAGS)
 	AC_SUBST(ICU_LIBS)
-	CPPFLAGS="$CPPFLAGS $ICU_CFLAGS -DU_USING_ICU_NAMESPACE=0"
+	CPPFLAGS="$CPPFLAGS $ICU_CFLAGS"
 	LIBS="$LIBS $ICU_LIBS"
 	AC_MSG_CHECKING([whether boost.regex was compiled with ICU support])
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([
@@ -257,19 +260,30 @@ PKG_CHECK_MODULES([libcurl], [libcurl], [

 # taglib
 if test "$taglib" != "no" ; then
-	AC_PATH_PROG(TAGLIB_CONFIG, taglib-config)
-	if test "$TAGLIB_CONFIG" != "" ; then
-		CPPFLAGS="$CPPFLAGS `$TAGLIB_CONFIG --cflags`"
-		LIBS="$LIBS `$TAGLIB_CONFIG --libs`"
+	PKG_CHECK_MODULES([taglib], [taglib], [
+		AC_SUBST(taglib_CFLAGS)
+		AC_SUBST(taglib_LIBS)
+	], [
+		AC_PATH_PROG([TAGLIB_CONFIG], [taglib-config])
+		if test "$TAGLIB_CONFIG" != ""; then
+			taglib_CFLAGS=`$TAGLIB_CONFIG --cflags`
+			taglib_LIBS=`$TAGLIB_CONFIG --libs`
+		else
+			if test "$taglib" = "yes" ; then
+				AC_MSG_ERROR([could not find taglib.pc or taglib-config executable])
+			fi
+		fi
+	])
+
+	if test "$TAGLIB_CONFIG$taglib_LIBS" != "" ; then
+		CPPFLAGS="$CPPFLAGS $taglib_CFLAGS"
+		LIBS="$LIBS $taglib_LIBS"
+
 		AC_CHECK_HEADERS([taglib.h], ,
 			if test "$taglib" = "yes" ; then
 				AC_MSG_ERROR([missing taglib.h header])
 			fi
 		)
-	else
-		if test "$taglib" = "yes" ; then
-			AC_MSG_ERROR([taglib-config executable is missing])
-		fi
 	fi
 fi

--- a/doc/config
+++ b/doc/config
@@ -125,6 +125,14 @@
 #
 #visualizer_spectrum_smooth_look = yes
 #
+## Use unicode block characters from "symbols for legacy computing". This
+## improves the smooth look on transparent terminals by using special unicode
+## chars instead of reversing the background and foreground color on the bottom
+## edge of the spectrum. If it leads to a garbled output on the bottom edge of
+## the spectrum, you can either change the font or disable this option.
+#
+#visualizer_spectrum_smooth_look_legacy_chars = yes
+#
 ## A value between 1 and 5 inclusive. Specifying a larger value makes the
 ## visualizer look at a larger slice of time, which results in less jumpy
 ## visualizer output.
@@ -141,6 +149,11 @@
 #
 #visualizer_spectrum_hz_max = 20000
 #
+## Use log scaling for the frequency spectrum axes
+#
+#visualizer_spectrum_log_scale_x = yes
+#visualizer_spectrum_log_scale_y = yes
+#
 ##### system encoding #####
 ##
 ## ncmpcpp should detect your charset encoding but if it failed to do so, you
@@ -172,6 +185,7 @@
 ##
 ## %l - length
 ## %f - filename
+## %F - full filepath
 ## %D - directory
 ## %a - artist
 ## %A - album artist
@@ -408,7 +422,7 @@
 #
 #cyclic_scrolling = no
 #
-#lyrics_fetchers = azlyrics, genius, musixmatch, sing365, metrolyrics, justsomelyrics, jahlyrics, plyrics, tekstowo, zeneszoveg, internet
+#lyrics_fetchers = genius, tekstowo, plyrics, justsomelyrics, jahlyrics, zeneszoveg, internet
 #
 #follow_now_playing_lyrics = no
 #
--- a/doc/ncmpcpp.1
+++ b/doc/ncmpcpp.1
@@ -114,6 +114,13 @@ Automatically scale visualizer size.
 .B visualizer_spectrum_smooth_look = yes/no
 For spectrum visualizer, use unicode block characters for a smoother, more continuous look. This will override the visualizer_look option. With transparent terminals and visualizer_in_stereo set, artifacts may be visible on the bottom half of the visualization.
 .TP
+.B visualizer_spectrum_smooth_look_legacy_chars = yes/no
+Use unicode block characters from "symbols for legacy computing". This improves
+the smooth look on transparent terminals by using special unicode chars instead
+of reversing the background and foreground color on the bottom edge of the
+spectrum. If it leads to a garbled output on the bottom edge of the spectrum,
+you can either change the font or disable this option.
+.TP
 .B visualizer_spectrum_dft_size = NUMBER
 For spectrum visualizer, a value between 1 and 5 inclusive. Specifying a larger value makes the visualizer look at a larger slice of time, which results in less jumpy visualizer output.
 .TP
@@ -472,6 +479,7 @@ For song format you can use:

 %l - length
 %f - filename
+ %F - full filepath
 %D - directory
 %a - artist
 %A - album artist
--- a/extras/artist_to_albumartist.cpp
+++ b/extras/artist_to_albumartist.cpp
@@ -34,7 +34,7 @@ enum class CopyResult { Success, NoArtist, AlbumArtistAlreadyInPlace };
 bool is_framelist_empty(const TagLib::ID3v2::FrameList &list)
 {
 	for (auto it = list.begin(); it != list.end(); ++it)
-		if ((*it)->toString() != TagLib::String::null)
+		if (!(*it)->toString().isEmpty())
 			return false;
 	return true;
 }
--- a/src/actions.cpp
+++ b/src/actions.cpp
@@ -1755,33 +1755,46 @@ void JumpToPositionInSong::run()
 	std::string spos;
 	{
 		Statusbar::ScopedLock slock;
-		Statusbar::put() << "Position to go (in %/m:ss/seconds(s)): ";
+		Statusbar::put() << "Position to go (in %/h:m:ss/m:ss/seconds(s)): ";
 		spos = wFooter->prompt();
 	}
 	
 	boost::regex rx;
 	boost::smatch what;
-	if (boost::regex_match(spos, what, rx.assign("([0-9]+):([0-9]{2})"))) // mm:ss
+	// mm:ss
+	if (boost::regex_match(spos, what, rx.assign("([0-9]+):([0-9]{2})")))
 	{
 		auto mins = fromString<unsigned>(what[1]);
 		auto secs = fromString<unsigned>(what[2]);
 		boundsCheck(secs, 0u, 60u);
 		Mpd.Seek(s.getPosition(), mins * 60 + secs);
 	}
-	else if (boost::regex_match(spos, what, rx.assign("([0-9]+)s"))) // position in seconds
+	// position in seconds
+	else if (boost::regex_match(spos, what, rx.assign("([0-9]+)s")))
 	{
 		auto secs = fromString<unsigned>(what[1]);
 		Mpd.Seek(s.getPosition(), secs);
 	}
-	else if (boost::regex_match(spos, what, rx.assign("([0-9]+)[%]{0,1}"))) // position in %
+	// position in%
+	else if (boost::regex_match(spos, what, rx.assign("([0-9]+)[%]{0,1}")))
 	{
 		auto percent = fromString<unsigned>(what[1]);
 		boundsCheck(percent, 0u, 100u);
 		int secs = (percent * s.getDuration()) / 100.0;
 		Mpd.Seek(s.getPosition(), secs);
 	}
+	// position in hh:mm:ss
+	else if (boost::regex_match(spos, what, rx.assign("([0-9]+):([0-9]{2}):([0-9]{2})")))
+	{
+		auto hours = fromString<unsigned>(what[1]);
+		auto mins  = fromString<unsigned>(what[2]);
+		auto secs  = fromString<unsigned>(what[3]);
+		boundsCheck(mins, 0u, 60u);
+		boundsCheck(secs, 0u, 60u);
+		Mpd.Seek(s.getPosition(), hours * 3600 + mins * 60 + secs);
+	}
 	else
-		Statusbar::print("Invalid format ([m]:[ss], [s]s, [%]%, [%] accepted)");
+		Statusbar::print("Invalid format ([h]:[mm]:[ss], [m]:[ss], [s]s, [%]%, [%] accepted)");
 }

 bool SelectItem::canBeRun()
--- a/src/configuration.cpp
+++ b/src/configuration.cpp
@@ -156,14 +156,10 @@ bool configure(int argc, char **argv)
 		if (vm.count("test-lyrics-fetchers"))
 		{
 			std::vector<std::tuple<std::string, std::string, std::string>> fetcher_data = {
-				std::make_tuple("azlyrics", "rihanna", "umbrella"),
 				std::make_tuple("genius", "rihanna", "umbrella"),
-				std::make_tuple("musixmatch", "rihanna", "umbrella"),
-				std::make_tuple("sing365", "rihanna", "umbrella"),
-				std::make_tuple("metrolyrics", "rihanna", "umbrella"),
 				std::make_tuple("justsomelyrics", "rihanna", "umbrella"),
 				std::make_tuple("jahlyrics", "sean kingston", "dry your eyes"),
-				std::make_tuple("plyrics", "offspring", "genocide"),
+				std::make_tuple("plyrics", "rihanna", "umbrella"),
 				std::make_tuple("tekstowo", "rihanna", "umbrella"),
 				std::make_tuple("zeneszoveg", "rihanna", "umbrella"),
 			};
--- a/src/curses/window.cpp
+++ b/src/curses/window.cpp
@@ -24,6 +24,7 @@
 #include <cstdlib>
 #include <iostream>
 #include <sys/select.h>
+#include <termios.h>
 #include <unistd.h>

 #include "utility/readline.h"
@@ -198,6 +199,8 @@ int add_base()
 int color_pair_counter;
 std::vector<int> color_pair_map;

+termios orig_termios;
+
 }

 namespace NC {
@@ -400,6 +403,7 @@ int colorCount()

 void initScreen(bool enable_colors, bool enable_mouse)
 {
+	tcgetattr(STDIN_FILENO, &orig_termios);
 	initscr();
 	if (has_colors() && enable_colors)
 	{
@@ -481,6 +485,7 @@ void destroyScreen()
 	Mouse::disable();
 	curs_set(1);
 	endwin();
+	tcsetattr(STDIN_FILENO, TCSANOW, &orig_termios);
 }

 Window::Window(size_t startx, size_t starty, size_t width, size_t height,
@@ -501,12 +506,6 @@ Window::Window(size_t startx, size_t starty, size_t width, size_t height,
 	  m_alt_charset_counter(0),
 	  m_italic_counter(0)
 {
-	if (m_start_x > size_t(COLS)
-	    ||  m_start_y > size_t(LINES)
-	    ||  m_width+m_start_x > size_t(COLS)
-	    ||  m_height+m_start_y > size_t(LINES))
-		throw std::logic_error("constructed window doesn't fit into the terminal");
-
 	if (m_border)
 	{
 		++m_start_x;
--- a/src/curses/window.h
+++ b/src/curses/window.h
@@ -26,7 +26,6 @@
 #include "config.h"

 #include "curses.h"
-#include "gcc.h"

 #include <boost/optional.hpp>
 #include <functional>
--- a/src/display.cpp
+++ b/src/display.cpp
@@ -47,6 +47,8 @@ const wchar_t *toColumnName(char c)
 			return L"Filename";
 		case 'D':
 			return L"Directory";
+		case 'F':
+			return L"Filepath";
 		case 'a':
 			return L"Artist";
 		case 'A':
--- a/src/gcc.h
+++ b/src/gcc.h
@@ -1,29 +0,0 @@
-/***************************************************************************
- *   Copyright (C) 2008-2021 by Andrzej Rybczak                            *
- *   andrzej@rybczak.net                                                   *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
- ***************************************************************************/
-
-#if defined(__GNUC__) && __GNUC__ >= 3
-# define GNUC_NORETURN __attribute__((noreturn))
-# define GNUC_UNUSED __attribute__((unused))
-# define GNUC_PRINTF(a, b) __attribute__((format(printf, a, b)))
-#else
-# define GNUC_NORETURN
-# define GNUC_UNUSED
-# define GNUC_PRINTF(a, b)
-#endif
--- a/src/interfaces.h
+++ b/src/interfaces.h
@@ -25,7 +25,6 @@
 #include <boost/tuple/tuple.hpp>
 #include <string>
 #include "enums.h"
-#include "gcc.h"
 #include "screens/screen.h"
 #include "song.h"

--- a/src/lyrics_fetcher.cpp
+++ b/src/lyrics_fetcher.cpp
@@ -38,16 +38,8 @@ std::istream &operator>>(std::istream &is, LyricsFetcher_ &fetcher)
 {
 	std::string s;
 	is >> s;
-	if (s == "azlyrics")
-		fetcher = std::make_unique<AzLyricsFetcher>();
-	else if (s == "genius")
+	if (s == "genius")
 		fetcher = std::make_unique<GeniusFetcher>();
-	else if (s == "musixmatch")
-		fetcher = std::make_unique<MusixmatchFetcher>();
-	else if (s == "sing365")
-		fetcher = std::make_unique<Sing365Fetcher>();
-	else if (s == "metrolyrics")
-		fetcher = std::make_unique<MetrolyricsFetcher>();
 	else if (s == "justsomelyrics")
 		fetcher = std::make_unique<JustSomeLyricsFetcher>();
 	else if (s == "jahlyrics")
@@ -76,7 +68,7 @@ LyricsFetcher::Result LyricsFetcher::fetch(const std::string &artist,
 	std::string url = urlTemplate();
 	boost::replace_all(url, "%artist%", Curl::escape(artist));
 	boost::replace_all(url, "%title%", Curl::escape(title));
-	
+
 	std::string data;
 	CURLcode code = Curl::perform(data, url, "", true);
 	
@@ -88,9 +80,11 @@ LyricsFetcher::Result LyricsFetcher::fetch(const std::string &artist,

 	auto lyrics = getContent(regex(), data);

+	//std::cerr << "URL: " << url << "\n";
+	//std::cerr << "Data: " << data << "\n";
+
 	if (lyrics.empty() || notLyrics(data))
 	{
-		//std::cerr << "Data: " << data << "\n";
 		//std::cerr << "Empty: " << lyrics.empty() << "\n";
 		//std::cerr << "Not Lyrics: " << notLyrics(data) << "\n";
 		result.second = msgNotFound;
@@ -140,9 +134,11 @@ void LyricsFetcher::postProcess(std::string &data) const
 	boost::split(lines, data, boost::is_any_of("\n"));
 	for (auto &line : lines)
 		boost::trim(line);
-	std::unique(lines.begin(), lines.end(), [](std::string &a, std::string &b) {
-		return a.empty() && b.empty();
-	});
+	auto last = std::unique(
+		lines.begin(),
+		lines.end(),
+		[](std::string &a, std::string &b) { return a.empty() && b.empty(); });
+	lines.erase(last, lines.end());
 	data = boost::algorithm::join(lines, "\n");
 	boost::trim(data);
 }
@@ -202,14 +198,6 @@ bool GoogleLyricsFetcher::isURLOk(const std::string &url)

 /**********************************************************************/

-bool MetrolyricsFetcher::isURLOk(const std::string &url)
-{
-	// it sometimes return link to sitemap.xml, which is huge so we need to discard it
-	return GoogleLyricsFetcher::isURLOk(url) && url.find("sitemap") == std::string::npos;
-}
-
-/**********************************************************************/
-
 LyricsFetcher::Result InternetLyricsFetcher::fetch(const std::string &artist,
                                                   const std::string &title)
 {
--- a/src/lyrics_fetcher.h
+++ b/src/lyrics_fetcher.h
@@ -69,34 +69,6 @@ private:
 	const char *URL;
 };

-struct MusixmatchFetcher : public GoogleLyricsFetcher
-{
-	virtual const char *name() const override { return "musixmatch.com"; }
-
-protected:
-	virtual const char *regex() const override { return "<span class=\"lyrics__content__.*?>(.*?)</span>"; }
-
-	virtual void postProcess(std::string &) const override { }
-};
-
-struct MetrolyricsFetcher : public GoogleLyricsFetcher
-{
-	virtual const char *name() const override { return "metrolyrics.com"; }
-	
-protected:
-	virtual const char *regex() const override { return "<div class=\"lyrics-body\">(.*?)<!--WIDGET.*?<!-- Second Section -->(.*?)<!--WIDGET.*?<!-- Third Section -->(.*?)</div>"; }
-	
-	virtual bool isURLOk(const std::string &url) override;
-};
-
-struct Sing365Fetcher : public GoogleLyricsFetcher
-{
-	virtual const char *name() const override { return "lyrics007.com"; }
-	
-protected:
-	virtual const char *regex() const override { return "<div class=\"lyrics\">(.*?)</div>"; }
-};
-
 struct JustSomeLyricsFetcher : public GoogleLyricsFetcher
 {
 	virtual const char *name() const override { return "justsomelyrics.com"; }
@@ -105,14 +77,6 @@ protected:
 	virtual const char *regex() const override { return "<div class=\"content.*?</div>(.*?)See also"; }
 };

-struct AzLyricsFetcher : public GoogleLyricsFetcher
-{
-	virtual const char *name() const override { return "azlyrics.com"; }
-	
-protected:
-	virtual const char *regex() const override { return "<div class=\"lyricsh\">.*?</h2>.*<div>(.*?)</div>"; }
-};
-
 struct GeniusFetcher : public GoogleLyricsFetcher
 {
 	virtual const char *name() const override { return "genius.com"; }
@@ -142,7 +106,7 @@ struct TekstowoFetcher : public GoogleLyricsFetcher
 	virtual const char *name() const override { return "tekstowo.pl"; }

 protected:
-	virtual const char *regex() const override { return "<div class=\"song-text\".*?>.*?</h2>(.*?)<a"; }
+	virtual const char *regex() const override { return "<div class=\"inner-text\">(.*?)</div>"; }
 };

 struct ZeneszovegFetcher : public GoogleLyricsFetcher
@@ -150,7 +114,7 @@ struct ZeneszovegFetcher : public GoogleLyricsFetcher
 	virtual const char *name() const override { return "zeneszoveg.hu"; }

 protected:
-	virtual const char *regex() const override { return "<div class=\"lyrics-plain-text.*?\">(.*?)</div>"; }
+	virtual const char *regex() const override { return "<div id=\"tartalom_slide_content\"> (.*?)<style>"; }
 };

 struct InternetLyricsFetcher : public GoogleLyricsFetcher
--- a/src/mpdpp.h
+++ b/src/mpdpp.h
@@ -353,8 +353,14 @@ private:
 };

 template <typename ObjectT>
-struct Iterator: std::iterator<std::input_iterator_tag, ObjectT>
+struct Iterator
 {
+	using iterator_category = std::input_iterator_tag;
+	using value_type = ObjectT;
+	using difference_type = std::ptrdiff_t;
+	using pointer = ObjectT *;
+	using reference = ObjectT &;
+
 	// shared state of the iterator
 	struct State
 	{
--- a/src/ncmpcpp.cpp
+++ b/src/ncmpcpp.cpp
@@ -219,7 +219,10 @@ int main(int argc, char **argv)
 			try
 			{
 				auto k = Bindings.get(input);
-				std::any_of(k.first, k.second, std::bind(&Binding::execute, ph::_1));
+				[[maybe_unused]] bool executed = std::any_of(
+					k.first,
+					k.second,
+					std::bind(&Binding::execute, ph::_1));
 			}
 			catch (ConversionError &e)
 			{
--- a/src/screens/lyrics.cpp
+++ b/src/screens/lyrics.cpp
@@ -361,6 +361,25 @@ void Lyrics::toggleFetcher()
 		Statusbar::print("Using all lyrics fetchers");
 }

+/* For HTTP(S) streams, fetchInBackground makes ncmpcpp crash: the lyrics_file
+ * gets set to the stream URL, which is too long, hence
+ * boost::filesystem::exists() fails.
+ * Possible solutions:
+ * - truncate the URL and use that as a filename. Problem: resulting filename
+ *   might not be unique.
+ * - generate filenames in a different way for streams. Problem: what is a good
+ *   method for this? Perhaps hashing -- but then the lyrics filenames are not
+ *   informative.
+ * - skip fetching lyrics for streams with URLs that are too long. Problem:
+ *   this leads to inconsistent behavior since lyrics will be fetched for some
+ *   streams but not others.
+ * - avoid fetching lyrics for streams altogether.
+ *
+ * We choose the last solution, and ignore streams when fetching lyrics. This
+ * is because fetching lyrics for a stream may not be accurate (streams do not
+ * always provide the necessary metadata to look up lyrics reliably).
+ * Furthermore, fetching lyrics for streams is not necessarily desirable.
+ */
 void Lyrics::fetchInBackground(const MPD::Song &s, bool notify_)
 {
 	auto consumer_impl = [this] {
@@ -377,7 +396,10 @@ void Lyrics::fetchInBackground(const MPD::Song &s, bool notify_)
 					break;
 				}
 				lyrics_file = lyricsFilename(consumer->songs.front().song());
-				if (!boost::filesystem::exists(lyrics_file))
+
+				// For long filenames (e.g. http(s) stream URLs), boost::filesystem::exists() fails.
+				// This if condition is fine, because evaluation order is guaranteed.
+				if (!consumer->songs.front().song().isStream() && !boost::filesystem::exists(lyrics_file))
 				{
 					cs = consumer->songs.front();
 					if (cs.notify())
@@ -389,7 +411,7 @@ void Lyrics::fetchInBackground(const MPD::Song &s, bool notify_)
 				}
 				consumer->songs.pop();
 			}
-			if (!cs.song().empty())
+			if (!cs.song().empty() && !cs.song().isStream())
 			{
 				auto lyrics = downloadLyrics(cs.song(), nullptr, nullptr, m_fetcher);
 				if (lyrics)
--- a/src/screens/media_library.cpp
+++ b/src/screens/media_library.cpp
@@ -98,7 +98,7 @@ bool MoveToAlbum(NC::Menu<AlbumEntry> &albums, const std::string &primary_tag, c
 struct SortSongs {
 	typedef NC::Menu<MPD::Song>::Item SongItem;
 	
-	static const std::array<MPD::Song::GetFunction, 3> GetFuns;
+	static const std::array<MPD::Song::GetFunction, 4> GetFuns;
 	
 	LocaleStringComparison m_cmp;

@@ -117,26 +117,16 @@ public:
 				return ret < 0;
 		}

-		// Sort by track numbers.
-		try {
-			ret = boost::lexical_cast<int>(a.getTags(&MPD::Song::getTrackNumber))
-			    - boost::lexical_cast<int>(b.getTags(&MPD::Song::getTrackNumber));
-		} catch (boost::bad_lexical_cast &) {
-			ret = a.getTrackNumber().compare(b.getTrackNumber());
-		}
-		if (ret != 0)
-			return ret < 0;
-
-		// If track numbers are equal, sort by the display format.
 		return Format::stringify<char>(Config.song_library_format, &a)
 		     < Format::stringify<char>(Config.song_library_format, &b);
 	}
 };

-const std::array<MPD::Song::GetFunction, 3> SortSongs::GetFuns = {{
+const std::array<MPD::Song::GetFunction, 4> SortSongs::GetFuns = {{
 	&MPD::Song::getDate,
 	&MPD::Song::getAlbum,
-	&MPD::Song::getDisc
+	&MPD::Song::getDisc,
+	&MPD::Song::getTrackNumber,
 }};

 class SortAlbumEntries {
@@ -346,9 +336,9 @@ void MediaLibrary::update()
 			for (const auto &album : albums)
 			{
 				auto entry = AlbumEntry(
-					Album(std::move(std::get<0>(album.first)),
-					      std::move(std::get<1>(album.first)),
-					      std::move(std::get<2>(album.first)),
+					Album(std::get<0>(album.first),
+					      std::get<1>(album.first),
+					      std::get<2>(album.first),
 					      album.second));
 				if (idx < Albums.size())
 					Albums[idx].value() = std::move(entry);
@@ -445,8 +435,8 @@ void MediaLibrary::update()
 				{
 					auto entry = AlbumEntry(
 						Album(primary_tag,
-						      std::move(std::get<0>(album.first)),
-						      std::move(std::get<1>(album.first)),
+						      std::get<0>(album.first),
+						      std::get<1>(album.first),
 						      album.second));
 					if (idx < Albums.size())
 					{
--- a/src/screens/tag_editor.cpp
+++ b/src/screens/tag_editor.cpp
@@ -798,13 +798,16 @@ void TagEditor::runAction()
 			Statusbar::print("Writing changes...");
 			for (auto it = EditedSongs.begin(); it != EditedSongs.end(); ++it)
 			{
-				Statusbar::printf("Writing tags in \"%1%\"...", (*it)->getName());
-				if (!Tags::write(**it))
+				if ((*it)->isModified())
 				{
-					Statusbar::printf("Error while writing tags to \"%1%\": %2%",
-					                  (*it)->getName(), strerror(errno));
-					success = 0;
-					break;
+					Statusbar::printf("Writing tags in \"%1%\"...", (*it)->getName());
+					if (!Tags::write(**it))
+					{
+						Statusbar::printf("Error while writing tags to \"%1%\": %2%",
+						                  (*it)->getName(), strerror(errno));
+						success = 0;
+						break;
+					}
 				}
 			}
 			if (success)
--- a/src/screens/visualizer.cpp
+++ b/src/screens/visualizer.cpp
@@ -83,7 +83,8 @@ Visualizer::Visualizer()
  HZ_MIN(Config.visualizer_spectrum_hz_min),
  HZ_MAX(Config.visualizer_spectrum_hz_max),
  GAIN(Config.visualizer_spectrum_gain),
-  SMOOTH_CHARS(ToWString("▁▂▃▄▅▆▇█"))
+  SMOOTH_CHARS(ToWString("▁▂▃▄▅▆▇█")),
+  SMOOTH_CHARS_FLIPPED(ToWString("▔🮂🮃🮄🬎🮅🮆█")) // https://unicode.org/charts/PDF/U1FB00.pdf
 #endif
 {
 	InitDataSource();
@@ -95,7 +96,7 @@ Visualizer::Visualizer()
 	memset(m_fftw_input, 0, sizeof(double)*DFT_TOTAL_SIZE);
 	m_fftw_output = static_cast<fftw_complex *>(fftw_malloc(sizeof(fftw_complex)*m_fftw_results));
 	m_fftw_plan = fftw_plan_dft_r2c_1d(DFT_TOTAL_SIZE, m_fftw_input, m_fftw_output, FFTW_ESTIMATE);
-	m_dft_logspace.reserve(500);
+	m_dft_freqspace.reserve(500);
 	m_bar_heights.reserve(100);
 #	endif // HAVE_FFTW3_H
 }
@@ -107,7 +108,7 @@ void Visualizer::switchTo()
 	m_reset_output = true;
 	drawHeader();
 #	ifdef HAVE_FFTW3_H
-	GenLogspace();
+	GenFreqSpace();
 	m_bar_heights.reserve(w.getWidth());
 #	endif // HAVE_FFTW3_H
 }
@@ -121,7 +122,7 @@ void Visualizer::resize()
 	hasToBeResized = 0;
 	InitVisualization();
 #	ifdef HAVE_FFTW3_H
-	GenLogspace();
+	GenFreqSpace();
 	m_bar_heights.reserve(w.getWidth());
 #	endif // HAVE_FFTW3_H
 }
@@ -420,7 +421,7 @@ void Visualizer::DrawSoundEllipseStereo(const int16_t *buf_left, const int16_t *
 		auto c = toColor(sqrt(x*x + 4*y*y), radius, true);
 		w << NC::XY(left_half_width + x, top_half_height + y)
 		  << c
-		  << Config.visualizer_chars[1]
+		  << Config.visualizer_chars[0]
 		  << NC::FormattedColor::End<>(c);
 	}
 }
@@ -449,7 +450,7 @@ void Visualizer::DrawFrequencySpectrum(const int16_t *buf, ssize_t samples, size
 	const size_t win_width = w.getWidth();

 	size_t cur_bin = 0;
-	while (cur_bin < m_fftw_results && Bin2Hz(cur_bin) < m_dft_logspace[0])
+	while (cur_bin < m_fftw_results && Bin2Hz(cur_bin) < m_dft_freqspace[0])
 		++cur_bin;
 	for (size_t x = 0; x < win_width; ++x)
 	{
@@ -458,10 +459,10 @@ void Visualizer::DrawFrequencySpectrum(const int16_t *buf, ssize_t samples, size
 		// accumulate bins
 		size_t count = 0;
 		// check right bound
-		while (cur_bin < m_fftw_results && Bin2Hz(cur_bin) < m_dft_logspace[x])
+		while (cur_bin < m_fftw_results && Bin2Hz(cur_bin) < m_dft_freqspace[x])
 		{
 			// check left bound if not first index
-			if (x == 0 || Bin2Hz(cur_bin) >= m_dft_logspace[x-1])
+			if (x == 0 || Bin2Hz(cur_bin) >= m_dft_freqspace[x-1])
 			{
 				bar_height += m_freq_magnitudes[cur_bin];
 				++count;
@@ -475,8 +476,19 @@ void Visualizer::DrawFrequencySpectrum(const int16_t *buf, ssize_t samples, size
 		// average bins
 		bar_height /= count;

-		// log scale bar heights
-		bar_height = (20 * log10(bar_height) + DYNAMIC_RANGE + GAIN) / DYNAMIC_RANGE;
+		// apply scaling to bar heights
+		if (Config.visualizer_spectrum_log_scale_y) {
+			bar_height = (20 * log10(bar_height) + DYNAMIC_RANGE + GAIN) / DYNAMIC_RANGE;
+		} else {
+			// apply gain
+			bar_height *= pow(10, 1.8 + GAIN / 20);
+			// buff higher frequencies
+			bar_height *= log2(2 + x) * 80.0/win_width;
+			// moderately normalize the heights
+			bar_height = pow(bar_height, 0.65);
+
+			//bar_height = pow(10, 1 + GAIN / 20) * bar_height;
+		}
 		// Scale bar height between 0 and height
 		bar_height = bar_height > 0 ? bar_height * height : 0;
 		bar_height = bar_height > height ? height : bar_height;
@@ -498,7 +510,12 @@ void Visualizer::DrawFrequencySpectrum(const int16_t *buf, ssize_t samples, size
 				++h_idx;
 		} else {
 			// data point does not exist, need to interpolate
-			h = Interpolate(x, h_idx);
+			if (Config.visualizer_spectrum_log_scale_x) {
+				h = InterpolateCubic(x, h_idx);
+			} else {
+				h = std::min(InterpolateLinear(x, h_idx), height / 1.0);
+				//h = 0;
+			}
 		}

 		for (size_t j = 0; j < h; ++j)
@@ -518,8 +535,12 @@ void Visualizer::DrawFrequencySpectrum(const int16_t *buf, ssize_t samples, size
 				} else {
 					// fractional height
 					if (flipped) {
-						ch = SMOOTH_CHARS[size-idx-2];
-						color = NC::FormattedColor(color.color(), {NC::Format::Reverse});
+						if (Config.visualizer_spectrum_smooth_look_legacy_chars) {
+							ch = SMOOTH_CHARS_FLIPPED[idx];
+						} else {
+							ch = SMOOTH_CHARS[size-idx-2];
+							color = NC::FormattedColor(color.color(), {NC::Format::Reverse});
+						}
 					} else {
 						ch = SMOOTH_CHARS[idx];
 					}
@@ -544,7 +565,7 @@ void Visualizer::DrawFrequencySpectrumStereo(const int16_t *buf_left, const int1
 	DrawFrequencySpectrum(buf_right, samples, height, w.getHeight() - height);
 }

-double Visualizer::Interpolate(size_t x, size_t h_idx)
+double Visualizer::InterpolateCubic(size_t x, size_t h_idx)
 {
 	const double x_next = m_bar_heights[h_idx].first;
 	const double h_next = m_bar_heights[h_idx].second;
@@ -589,6 +610,33 @@ double Visualizer::Interpolate(size_t x, size_t h_idx)
 	return h_next;
 }

+double Visualizer::InterpolateLinear(size_t x, size_t h_idx)
+{
+	const double x_next = m_bar_heights[h_idx].first;
+	const double h_next = m_bar_heights[h_idx].second;
+
+	double dh = 0;
+	if (h_idx == 0) {
+		// no data points on the left, linear extrapolation
+		if (h_idx < m_bar_heights.size()) {
+			const double x_next2 = m_bar_heights[h_idx+1].first;
+			const double h_next2 = m_bar_heights[h_idx+1].second;
+			dh = (h_next2 - h_next) / (x_next2 - x_next);
+		}
+		return h_next - dh * (x_next - x);
+	} else if (h_idx < m_bar_heights.size()) {
+		// simple linear interpolation
+		const double x_prev = m_bar_heights[h_idx-1].first;
+		const double h_prev = m_bar_heights[h_idx-1].second;
+
+		const double m = (h_next - h_prev) / (x_next - x_prev);
+		return h_prev + m * (x - x_prev);
+	}
+
+	// no data points on the right: don't interpolate
+	return h_next;
+}
+
 void Visualizer::ApplyWindow(double *output, const int16_t *input, ssize_t samples)
 {
 	// Use Blackman window for low sidelobes and fast sidelobe rolloff
@@ -617,10 +665,36 @@ void Visualizer::GenLogspace()
 	const size_t win_width = w.getWidth();
 	const size_t left_bins = (log10(HZ_MIN) - win_width*log10(HZ_MIN)) / (log10(HZ_MIN) - log10(HZ_MAX));
 	// Generate logspaced frequencies
-	m_dft_logspace.resize(win_width);
-	const double log_scale = log10(HZ_MAX) / (left_bins + m_dft_logspace.size() - 1);
-	for (size_t i = left_bins; i < m_dft_logspace.size() + left_bins; ++i) {
-		m_dft_logspace[i - left_bins] = pow(10, i * log_scale);
+	m_dft_freqspace.resize(win_width);
+	const double log_scale = log10(HZ_MAX) / (left_bins + m_dft_freqspace.size() - 1);
+	for (size_t i = left_bins; i < m_dft_freqspace.size() + left_bins; ++i) {
+		m_dft_freqspace[i - left_bins] = pow(10, i * log_scale);
+	}
+}
+
+// Generate vector of linearly-spaced frequencies from HZ_MIN to HZ_MAX
+void Visualizer::GenLinspace()
+{
+	// Calculate number of extra bins needed between 0 HZ and HZ_MIN
+	const size_t win_width = w.getWidth();
+	const size_t left_bins = (HZ_MIN - win_width * HZ_MIN) / (HZ_MIN - HZ_MAX);
+	// Generate linspaced frequencies
+	m_dft_freqspace.resize(win_width);
+	const double lin_scale = HZ_MAX / (left_bins + m_dft_freqspace.size() - 1);
+	for (size_t i = left_bins; i < m_dft_freqspace.size() + left_bins; ++i) {
+		m_dft_freqspace[i - left_bins] = i * lin_scale;
+	}
+}
+
+// Generate vector of spectrum frequencies from HZ_MIN to HZ_MAX
+// Frequencies are (not) log-scaled depending on
+// Config.visualizer_spectrum_log_scale_x
+void Visualizer::GenFreqSpace()
+{
+	if (Config.visualizer_spectrum_log_scale_x) {
+		GenLogspace();
+	} else {
+		GenLinspace();
 	}
 }
 #endif // HAVE_FFTW3_H
--- a/src/screens/visualizer.h
+++ b/src/screens/visualizer.h
@@ -76,8 +76,11 @@ private:
 	void DrawFrequencySpectrumStereo(const int16_t *, const int16_t *, ssize_t, size_t);
 	void ApplyWindow(double *, const int16_t *, ssize_t);
 	void GenLogspace();
+	void GenLinspace();
+	void GenFreqSpace();
 	double Bin2Hz(size_t);
-	double Interpolate(size_t, size_t);
+	double InterpolateCubic(size_t, size_t);
+	double InterpolateLinear(size_t, size_t);
 #	endif // HAVE_FFTW3_H

 	void InitDataSource();
@@ -113,7 +116,8 @@ private:
 	const double HZ_MAX;
 	const double GAIN;
 	const std::wstring SMOOTH_CHARS;
-	std::vector<double> m_dft_logspace;
+	const std::wstring SMOOTH_CHARS_FLIPPED;
+	std::vector<double> m_dft_freqspace;
 	std::vector<std::pair<size_t, double>> m_bar_heights;

 	std::vector<double> m_freq_magnitudes;
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -253,6 +253,7 @@ bool Configuration::read(const std::vector<std::string> &config_paths, bool igno
 			});
 	p.add("visualizer_autoscale", &visualizer_autoscale, "no", yes_no);
 	p.add("visualizer_spectrum_smooth_look", &visualizer_spectrum_smooth_look, "yes", yes_no);
+	p.add("visualizer_spectrum_smooth_look_legacy_chars", &visualizer_spectrum_smooth_look_legacy_chars, "yes", yes_no);
 	p.add("visualizer_spectrum_dft_size", &visualizer_spectrum_dft_size,
 			"2", [](std::string v) {
 			auto result = verbose_lexical_cast<size_t>(v);
@@ -277,6 +278,8 @@ bool Configuration::read(const std::vector<std::string> &config_paths, bool igno
 			lowerBoundCheck<double>(result, Config.visualizer_spectrum_hz_min+1);
 			return result;
 			});
+	p.add("visualizer_spectrum_log_scale_x", &visualizer_spectrum_log_scale_x, "yes", yes_no);
+	p.add("visualizer_spectrum_log_scale_y", &visualizer_spectrum_log_scale_y, "yes", yes_no);
 	p.add("visualizer_color", &visualizer_colors,
 	      "blue, cyan, green, yellow, magenta, red", list_of<NC::FormattedColor>);
 	p.add("system_encoding", &system_encoding, "", [](std::string encoding) {
@@ -458,9 +461,24 @@ bool Configuration::read(const std::vector<std::string> &config_paths, bool igno
 	p.add("titles_visibility", &titles_visibility, "yes", yes_no);
 	p.add("header_text_scrolling", &header_text_scrolling, "yes", yes_no);
 	p.add("cyclic_scrolling", &use_cyclic_scrolling, "no", yes_no);
-	p.add("lyrics_fetchers", &lyrics_fetchers,
-	      "azlyrics, genius, musixmatch, sing365, metrolyrics, justsomelyrics, jahlyrics, plyrics, tekstowo, zeneszoveg, internet",
-	      list_of<LyricsFetcher_>);
+	p.add<void>("lyrics_fetchers", nullptr,
+	      "genius, tekstowo, plyrics, justsomelyrics, jahlyrics, zeneszoveg, internet", [this](std::string v) {
+		      lyrics_fetchers = list_of<LyricsFetcher_>(v, [](std::string s) {
+			      LyricsFetcher_ fetcher;
+			      try {
+				      fetcher = boost::lexical_cast<LyricsFetcher_>(s);
+			      } catch (boost::bad_lexical_cast &) {
+				      std::clog << "Unknown lyrics fetcher: " << s << "\n";
+			      }
+			      return fetcher;
+		      });
+		      auto last = std::remove_if(
+			      lyrics_fetchers.begin(), lyrics_fetchers.end(),
+			      [](const auto &f) { return f.get() == nullptr; });
+		      lyrics_fetchers.erase(last, lyrics_fetchers.end());
+		      if (lyrics_fetchers.empty())
+			      invalid_value(v);
+	      });
 	p.add("follow_now_playing_lyrics", &now_playing_lyrics, "no", yes_no);
 	p.add("fetch_lyrics_for_current_song_in_background", &fetch_lyrics_in_background,
 	      "no", yes_no);
--- a/src/settings.h
+++ b/src/settings.h
@@ -86,10 +86,13 @@ struct Configuration
 	size_t visualizer_fps;
 	bool visualizer_autoscale;
 	bool visualizer_spectrum_smooth_look;
+	bool visualizer_spectrum_smooth_look_legacy_chars;
 	uint32_t visualizer_spectrum_dft_size;
 	double visualizer_spectrum_gain;
 	double visualizer_spectrum_hz_min;
 	double visualizer_spectrum_hz_max;
+	bool visualizer_spectrum_log_scale_x;
+	bool visualizer_spectrum_log_scale_y;

 	std::string pattern;

--- a/src/song.cpp
+++ b/src/song.cpp
@@ -293,7 +293,9 @@ bool Song::isFromDatabase() const
 bool Song::isStream() const
 {
 	assert(m_song);
-	return !strncmp(mpd_song_get_uri(m_song.get()), "http://", 7);
+	const char *song_uri = mpd_song_get_uri(m_song.get());
+	// Stream schemas: http, https
+	return !strncmp(song_uri, "http://", 7) || !strncmp(song_uri, "https://", 8);
 }

 bool Song::empty() const
@@ -308,7 +310,7 @@ std::string Song::ShowTime(unsigned length)
 	int minutes = length/60;
 	length -= minutes*60;
 	int seconds = length;
-	
+
 	std::string result;
 	if (hours > 0)
 		result = (boost::format("%d:%02d:%02d") % hours % minutes % seconds).str();
--- a/src/statusbar.h
+++ b/src/statusbar.h
@@ -24,7 +24,6 @@
 #include <boost/format.hpp>
 #include "curses/window.h"
 #include "settings.h"
-#include "gcc.h"
 #include "interfaces.h"

 namespace Progressbar {
--- a/src/tags.cpp
+++ b/src/tags.cpp
@@ -123,12 +123,12 @@ void writeCommonTags(const MPD::MutableSong &s, TagLib::Tag *tag)
 	tag->setArtist(ToWString(s.getArtist()));
 	tag->setAlbum(ToWString(s.getAlbum()));
 	try {
-		tag->setYear(boost::lexical_cast<TagLib::uint>(s.getDate()));
+		tag->setYear(boost::lexical_cast<unsigned>(s.getDate()));
 	} catch (boost::bad_lexical_cast &) {
 		std::cerr << "writeCommonTags: couldn't write 'year' tag to '" << s.getURI() << "' as it's not a positive integer\n";
 	}
 	try {
-		tag->setTrack(boost::lexical_cast<TagLib::uint>(s.getTrack()));
+		tag->setTrack(boost::lexical_cast<unsigned>(s.getTrack()));
 	} catch (boost::bad_lexical_cast &) {
 		std::cerr << "writeCommonTags: couldn't write 'track' tag to '" << s.getURI() << "' as it's not a positive integer\n";
 	}
@@ -174,6 +174,7 @@ void writeID3v2Tags(const MPD::MutableSong &s, TagLib::ID3v2::Tag *tag)
 void writeXiphComments(const MPD::MutableSong &s, TagLib::Ogg::XiphComment *tag)
 {
 	auto writeXiph = [&](const TagLib::String &type, const TagLib::StringList &list) {
+		tag->removeFields(type);
 		for (auto it = list.begin(); it != list.end(); ++it)
 			tag->addField(type, *it, it == list.begin());
 	};
@@ -261,7 +262,7 @@ void read(mpd_song *s)
 	if (f.isNull())
 		return;
 	
-	setAttribute(s, "Time", boost::lexical_cast<std::string>(f.audioProperties()->length()));
+	setAttribute(s, "Time", boost::lexical_cast<std::string>(f.audioProperties()->lengthInSeconds()));
 	
 	if (auto mpeg_file = dynamic_cast<TagLib::MPEG::File *>(f.file()))
 	{
@@ -301,15 +302,9 @@ bool write(MPD::MutableSong &s)
 	if (f.isNull())
 		return false;
 	
-	bool saved = false;
 	if (auto mpeg_file = dynamic_cast<TagLib::MPEG::File *>(f.file()))
 	{
 		writeID3v2Tags(s, mpeg_file->ID3v2Tag(true));
-		// write id3v2.4 tags only
-		if (!mpeg_file->save(TagLib::MPEG::File::ID3v2, true, 4, false))
-			return false;
-		// do not call generic save() as it will duplicate tags
-		saved = true;
 	}
 	else if (auto vorbis_file = dynamic_cast<TagLib::Ogg::Vorbis::File *>(f.file()))
 	{
@@ -326,7 +321,7 @@ bool write(MPD::MutableSong &s)
 	else
 		writeCommonTags(s, f.tag());
 	
-	if (!saved && !f.save())
+	if (!f.save())
 		return false;

 	// TODO: move this somewhere else
--- a/src/utility/comparators.cpp
+++ b/src/utility/comparators.cpp
@@ -34,10 +34,23 @@ bool hasTheWord(const std::string &s)
 	&&     (s[3] == ' ');
 }

+long long strToLL(const char *s, size_t len)
+{
+	long long n = 0;
+	while (len--)
+		n = 10*n + *s++ - '0';
+	return n;
+}
+
 }

 int LocaleStringComparison::compare(const char *a, size_t a_len, const char *b, size_t b_len) const
 {
+	// If both strings are numbers, compare them as such.
+	if (   a_len > 0 && std::all_of(a, a + a_len, isdigit)
+	    && b_len > 0 && std::all_of(b, b + b_len, isdigit))
+		return strToLL(a, a_len) - strToLL(b, b_len);
+
 	size_t ac_off = 0, bc_off = 0;
 	if (m_ignore_the)
 	{
--- a/src/utility/conversion.h
+++ b/src/utility/conversion.h
@@ -26,7 +26,6 @@
 #include <boost/type_traits/is_unsigned.hpp>

 #include "config.h"
-#include "gcc.h"

 struct ConversionError
 {
@@ -44,21 +43,21 @@ struct OutOfBounds : std::exception
 	const std::string &errorMessage() { return m_error_message; }
 	
 	template <typename Type>
-	GNUC_NORETURN static void raise(const Type &value, const Type &lbound, const Type &ubound)
+	[[noreturn]] static void raise(const Type &value, const Type &lbound, const Type &ubound)
 	{
 		throw OutOfBounds((boost::format(
 			"value is out of bounds ([%1%, %2%] expected, %3% given)") % lbound % ubound % value).str());
 	}
 	
 	template <typename Type>
-	GNUC_NORETURN static void raiseLower(const Type &value, const Type &lbound)
+	[[noreturn]] static void raiseLower(const Type &value, const Type &lbound)
 	{
 		throw OutOfBounds((boost::format(
 			"value is out of bounds ([%1%, ->) expected, %2% given)") % lbound % value).str());
 	}
 	
 	template <typename Type>
-	GNUC_NORETURN static void raiseUpper(const Type &value, const Type &ubound)
+	[[noreturn]] static void raiseUpper(const Type &value, const Type &ubound)
 	{
 		throw OutOfBounds((boost::format(
 			"value is out of bounds ((<-, %1%] expected, %2% given)") % ubound % value).str());
--- a/src/utility/string.h
+++ b/src/utility/string.h
@@ -25,7 +25,6 @@
 #include <locale>
 #include <string>
 #include <vector>
-#include "gcc.h"

 template <size_t N> size_t const_strlen(const char (&)[N]) {
 	return N-1;
--- a/src/utility/type_conversions.cpp
+++ b/src/utility/type_conversions.cpp
@@ -168,6 +168,8 @@ MPD::Song::GetFunction charToGetFunction(char c)
 			return &MPD::Song::getDirectory;
 		case 'f':
 			return &MPD::Song::getName;
+		case 'F':
+			return &MPD::Song::getURI;
 		case 'a':
 			return &MPD::Song::getArtist;
 		case 'A':