[output] enable colors by default

docs/configuration.rst

@@ -4921,7 +4921,17 @@ output.colors
 Type
     ``object`` (`key` -> `ANSI color`)
 Default
-    ``{"success": "1;32", "skip": "2"}``
+    .. code:: json
+
+        {
+            "success": "1;32",
+            "skip"   : "2",
+            "debug"  : "0;37",
+            "info"   : "1;37",
+            "warning": "1;33",
+            "error"  : "1;31"
+        }
+
 Description
     Controls the
     `ANSI colors <https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797#colors--graphics-mode>`__
@@ -4947,7 +4957,7 @@ output.ansi
 Type
     ``bool``
 Default
-    ``false``
+    ``true``
 Description
     | On Windows, enable ANSI escape sequences and colored output
     | by setting the ``ENABLE_VIRTUAL_TERMINAL_PROCESSING`` flag for stdout and stderr.

gallery_dl/__init__.py

@@ -86,7 +86,7 @@ def main():
                     signal.signal(signal_num, signal.SIG_IGN)
 
         # enable ANSI escape sequences on Windows
-        if util.WINDOWS and config.get(("output",), "ansi"):
+        if util.WINDOWS and config.get(("output",), "ansi", True):
             from ctypes import windll, wintypes, byref
             kernel32 = windll.kernel32
             mode = wintypes.DWORD()

gallery_dl/output.py

@@ -14,6 +14,15 @@ import functools
 import unicodedata
 from . import config, util, formatter
 
+COLORS_DEFAULT = {
+    "success": "1;32",
+    "skip"   : "2",
+    "debug"  : "0;37",
+    "info"   : "1;37",
+    "warning": "1;33",
+    "error"  : "1;31",
+}
+
 
 # --------------------------------------------------------------------
 # Logging
@@ -189,7 +198,9 @@ def configure_logging(loglevel):
     handler = root.handlers[0]
     opts = config.interpolate(("output",), "log")
 
-    colors = config.interpolate(("output",), "colors") or {}
+    colors = config.interpolate(("output",), "colors")
+    if colors is None:
+        colors = COLORS_DEFAULT
     if colors and not opts:
         opts = LOG_FORMAT
 
@@ -326,10 +337,13 @@ def select():
     mode = config.get(("output",), "mode")
 
     if mode is None or mode == "auto":
-        if hasattr(sys.stdout, "isatty") and sys.stdout.isatty():
+        try:
+            if sys.stdout.isatty():
                 output = ColorOutput() if ANSI else TerminalOutput()
             else:
                 output = PipeOutput()
+        except Exception:
+            output = PipeOutput()
     elif isinstance(mode, dict):
         output = CustomOutput(mode)
     else:
@@ -407,7 +421,10 @@ class ColorOutput(TerminalOutput):
     def __init__(self):
         TerminalOutput.__init__(self)
 
-        colors = config.get(("output",), "colors") or {}
+        colors = config.interpolate(("output",), "colors")
+        if colors is None:
+            colors = COLORS_DEFAULT
+
         self.color_skip = "\033[{}m".format(
             colors.get("skip", "2"))
         self.color_success = "\r\033[{}m".format(