Fix icon theme detection for case-insensitive 'dark'

diff --git a/src/pixbuf-util.cc b/src/pixbuf-util.cc
index 8cd2643fcadca9d09f6335dac67e13cfc6a993fc..2d2c15d03bf6beb3fc5e49f9f45afb55bbb56df7 100644 (file)
--- a/src/pixbuf-util.cc
+++ b/src/pixbuf-util.cc
@@ -185,7 +185,8 @@ GdkPixbuf *pixbuf_inline(const gchar *key)
        GtkSettings *settings = gtk_settings_get_default();
        g_autofree gchar *theme_name = nullptr;
        g_object_get(settings, "gtk-theme-name", &theme_name, nullptr);
-       gboolean dark = g_str_has_suffix(theme_name, "dark");
+       g_autofree gchar *theme_name_lc = g_ascii_strdown(theme_name, -1);
+       gboolean dark = g_str_has_suffix(theme_name_lc, "dark");
 
        const auto it = std::find_if(std::cbegin(inline_pixbuf_data), std::cend(inline_pixbuf_data),
                                     [key](const PixbufInline &pi){ return strcmp(pi.key, key) == 0; });