diff --git a/code/PKGBUILDs/nsxiv/PKGBUILD b/code/PKGBUILDs/nsxiv/PKGBUILD
index f9ea731..fa0bc1e 100644
--- a/code/PKGBUILDs/nsxiv/PKGBUILD
+++ b/code/PKGBUILDs/nsxiv/PKGBUILD
@@ -3,19 +3,19 @@
 
 _pkgname=nsxiv
 pkgname="${_pkgname}-bepo-git"
-pkgver=29.r13.g6922d5d
+pkgver=31.r19.gc03ec39
 pkgrel=1
 pkgdesc='New Simple X Image Viewer'
 arch=('x86_64')
 license=('GPL2')
 conflicts=("$_pkgname" "${_pkgname}-git")
 provides=('sxiv')
-url="https://github.com/${_pkgname}/${_pkgname}"
+url="https://codeberg.org/${_pkgname}/${_pkgname}"
 depends=('imlib2' 'desktop-file-utils' 'xdg-utils' 'hicolor-icon-theme' 'libexif' 'libxft' 'giflib' 'libwebp')
 makedepends=(git)
 source=("${_pkgname}::git+$url" config.h)
-sha512sums=('SKIP'
-            'fc4d8327b2de66f90af245d8670c4fd0169ba172fcdd0344d3ba6d72b13f54583b7042b4f7bfc891645675c3a0771c0144a6c0486a8380af93b7d090f990c6aa')
+b2sums=('SKIP'
+        '657b40dab4ed27e2d1402feb4fcd2dd225504c2e3a619da08cf87e36405d18a161a64939374670626e896c03a553a718f93b1bf54703f2d30dcdb27e082d6c21')
 
 pkgver() {
   cd "$srcdir/${_pkgname}"
diff --git a/code/PKGBUILDs/nsxiv/config.h b/code/PKGBUILDs/nsxiv/config.h
index 63b2e03..5f3ba76 100644
--- a/code/PKGBUILDs/nsxiv/config.h
+++ b/code/PKGBUILDs/nsxiv/config.h
@@ -1,4 +1,4 @@
-#ifdef _WINDOW_CONFIG
+#ifdef INCLUDE_WINDOW_CONFIG
 
 /* default window dimensions (overwritten via -g option): */
 static const int WIN_WIDTH  = 800;
@@ -14,26 +14,13 @@ static const char *DEFAULT_MARK_COLOR = NULL;  /* NULL means it will default to
 static const char *DEFAULT_BAR_BG     = NULL;  /* NULL means it will default to window background */
 static const char *DEFAULT_BAR_FG     = NULL;  /* NULL means it will default to window foreground */
 static const char *DEFAULT_FONT       = "monospace-8";
-#endif
 
 /* if true, statusbar appears on top of the window */
 static const bool TOP_STATUSBAR = false;
+#endif /* HAVE_LIBFONTS */
 
 #endif
-#ifdef _TITLE_CONFIG
-
-/* default title prefix */
-static const char *TITLE_PREFIX = "nsxiv - ";
-
-/* default title suffixmode, available options are:
- * SUFFIX_EMPTY
- * SUFFIX_BASENAME
- * SUFFIX_FULLPATH
- */
-static const suffixmode_t TITLE_SUFFIXMODE = SUFFIX_BASENAME;
-
-#endif
-#ifdef _IMAGE_CONFIG
+#ifdef INCLUDE_IMAGE_CONFIG
 
 /* levels (in percent) to use when zooming via '-' and '+':
  * (first/last value is used as min/max zoom level)
@@ -46,36 +33,45 @@ static const float zoom_levels[] = {
 /* default slideshow delay (in sec, overwritten via -S option): */
 static const int SLIDESHOW_DELAY = 5;
 
-/* gamma correction: the user-visible ranges [-GAMMA_RANGE, 0] and
- * (0, GAMMA_RANGE] are mapped to the ranges [0, 1], and (1, GAMMA_MAX].
+/* color correction: the user-visible ranges [-CC_STEPS, 0] and
+ * (0, CC_STEPS] are mapped to the ranges [0, 1], and (1, *_MAX].
+ * Higher step count will have higher granulairy.
  */
-static const double GAMMA_MAX   = 10.0;
-static const int    GAMMA_RANGE = 32;
+static const int    CC_STEPS        = 32;
+static const double GAMMA_MAX       = 10.0;
+static const double BRIGHTNESS_MAX  = 2.0;
+static const double CONTRAST_MAX    = 4.0;
 
 /* command i_scroll pans image 1/PAN_FRACTION of screen width/height */
 static const int PAN_FRACTION = 5;
 
-/* if false, pixelate images at zoom level != 100%,
- * toggled with 'a' key binding
- */
-static const bool ANTI_ALIAS = true;
-
-/* if true, use a checkerboard background for alpha layer,
- * toggled with 'A' key binding
- */
-static const bool ALPHA_LAYER = false;
-
 /* percentage of memory to use for imlib2's cache size.
  *   3 means use 3% of total memory which is about 245MiB on 8GiB machine.
  *   0 or less means disable cache.
  * 100 means use all available memory (but not above CACHE_SIZE_LIMIT).
+ *
+ * NOTE: higher cache size means better image reloading performance, but also
+ * higher memory usage.
  */
 static const int CACHE_SIZE_MEM_PERCENTAGE = 3;          /* use 3% of total memory for cache */
 static const int CACHE_SIZE_LIMIT = 256 * 1024 * 1024;   /* but not above 256MiB */
 static const int CACHE_SIZE_FALLBACK = 32 * 1024 * 1024; /* fallback to 32MiB if we can't determine total memory */
 
 #endif
-#ifdef _THUMBS_CONFIG
+#ifdef INCLUDE_OPTIONS_CONFIG
+
+/* if false, pixelate images at zoom level != 100%,
+ * toggled with 'a' key binding (overwritten via `--anti-alias` option)
+ */
+static const bool ANTI_ALIAS = true;
+
+/* if true, use a checkerboard background for alpha layer,
+ * toggled with 'A' key binding (overwritten via `--alpha-layer` option)
+ */
+static const bool ALPHA_LAYER = false;
+
+#endif
+#ifdef INCLUDE_THUMBS_CONFIG
 
 /* thumbnail sizes in pixels (width == height): */
 static const int thumb_sizes[] = { 32, 64, 96, 128, 160 };
@@ -84,7 +80,7 @@ static const int thumb_sizes[] = { 32, 64, 96, 128, 160 };
 static const int THUMB_SIZE = 3;
 
 #endif
-#ifdef _MAPPINGS_CONFIG
+#ifdef INCLUDE_MAPPINGS_CONFIG
 
 /* these modifiers will be used when processing keybindings */
 static const unsigned int USED_MODMASK = ShiftMask | ControlMask | Mod1Mask;