minor improvements

src/main.sh

@@ -47,6 +47,9 @@ MODE_INSERT="show"
 # Load logging methods
 . "sh/log.sh"
 
+# Load configuration
+. "sh/config.sh"
+
 # Load query methods
 . "sh/query.sh"
 
@@ -83,9 +86,6 @@ MODE_INSERT="show"
 # Load keys
 . "sh/keys.sh"
 
-# Load configuration
-. "sh/config.sh"
-
 # Load sorting methods
 . "sh/sort.sh"
 
@@ -98,6 +98,9 @@ MODE_INSERT="show"
 # Load AWK scripts
 . "sh/awk.sh"
 
+# Load filters
+. "sh/filter.sh"
+
 # Command-line options that may only be used internally.
 #   --lines
 #   --playback
@@ -225,30 +228,30 @@ case "${1:-}" in
   # @argument $5: MusicBrainz ID (optional)
   #
   # The argument `level` specifies the view relative to `view`: If `level` is
-  # set to +1, then the specified MusicBrainz ID is an ID of an object one level
-  # deeper than `view`. Alternatively, the argument `level` may be set to `-1`.
-  # Anything else is interpreted as "on the level of `view`".
+  # set to +1, then the specified MusicBrainz ID is an ID of an object one
+  # level deeper than `view`. Similarly, the argument `level` may be set to
+  # `-1`. Anything else is interpreted as "on the level of `view`".
   #
-  # The choice of possible arguments ($5) depends on the view.
-  # These views are independent of the MusicBrainz ID ($4) and of the argument
+  # The choice of possible levels ($4) depends on the view.
+  # These views are independent of the MusicBrainz ID ($5) and of the argument
   # ($5):
   # - VIEW_SEARCH_ARTIST: Get ready to query MusicBrainz for artists
   # - VIEW_SEARCH_ALBUM: Get ready to query MusicBrainz for albums
   # - VIEW_LIST_ARTISTS: List all locally available artists
   # - VIEW_LIST_ALBUMS: List al locally available albums
   #
-  # If no argument ($5) is specified, then the remaining views act as follows:
+  # If no level ($4) is specified, then the remaining views act as follows:
   # - VIEW_ARTIST: Display all release groups of that artist
   # - VIEW_RELEASEGROUP: Display all releases within that release group
   # - VIEW_RELEASE: Display track list of specified release
   #
-  # Here, if the argument is set to `-1`, then the parent entry is displayed:
+  # Here, if the level is set to `-1`, then the parent entry is displayed:
   # - VIEW_ARTIST: Divert view to VIEW_LIST_ARTISTS
   # - VIEW_RELEASEGROUP: For single-artist release groups, divert to
   #   VIEW_ARTIST of that artist, else display the artist selection.
   # - VIEW_RELEASE: Divert view to VIEW_LIST_RELEASEGROUP.
   #
-  # Alternatively, if the argument is set to `+1`, then the child entry is
+  # Alternatively, if the level is set to `+1`, then the child entry is
   # displayed:
   # - VIEW_ARTIST: Divert view to VIEW_LIST_ARTISTS
   # - VIEW_RELEASEGROUP: For single-artist release groups, divert to
@@ -489,7 +492,6 @@ case "${1:-}" in
 esac
 
 # Start application:
-# - load and export preset filters
 # - set title
 # - check for missing data from MusicBrainz
 # - precompute main views
@@ -497,9 +499,6 @@ esac
 # - start mpv daemon
 # - enter main loop and start fzf
 
-# Load filters
-. "sh/filter.sh"
-
 # Set window title
 printf '\033]0;%s\007' "$WINDOW_TITLE"
 
@@ -526,17 +525,17 @@ mpv_start
 # states are stored in (in)visible labels
 #
 # mode: [$MODE_NORMAL, $MODE_INSERT]
-# The mode is reflected on the input visibility. The variable $FZF_INPUT_STATE
-# is set to "hidden" if and only if the mode is `normal`. To swtich to `normal`
-# mode, we call `hide-input`. To switch to insert mode, we call `show-input`.
+# The mode is reflected on the input visibility. The variable
+# `FZF_INPUT_STATE`` is set to "hidden" if and only if the mode is `normal`. To
+# swtich to `normal` mode, we call `hide-input`. To switch to insert mode, we
+# call `show-input`.
 #
 # view: [$VIEW_*]
-# The view is stored in $FZF_LIST_LABEL. To set the view, call
+# The view is stored in `FZF_LIST_LABEL`. To set the view, call
 # `change-list-label($VIEW)`.
 #
-# argument: string
-# The argument is stored in $FZF_LIST_LABEL. To set the argument, call
-# `change-list-label($arg)`.
+# mbid:
+# The MusicBrainz ID of the current object is stored in `FZF_BORDER_LABEL`.
 IN_NORMAL_MODE="[ \$FZF_INPUT_STATE = hidden ]"
 IN_VIEW_PATTERN="[ \$FZF_LIST_LABEL = %s ]"
 IN_LIST_ARTISTS_VIEW="$(printf "$IN_VIEW_PATTERN" "$VIEW_LIST_ARTISTS")"
@@ -627,7 +626,7 @@ while true; do
         --bind="$KEYS_PREVIEW_TOGGLE_SIZE:change-preview-window(right,90%,border-line,nowrap|$FZF_DEFAULT_PREVIEW_WINDOW)" \
         --bind="$KEYS_PREVIEW_CLOSE:hide-preview" \
         --bind="$KEYS_PLAYBACK,$KEYS_N_PLAYBACK:transform($0 --playback $VIEW_PLAYLIST {3} {4} {5})+$FZF_RELOAD_PLAYLIST+$FZF_POS_PLAYLIST" \
-        --bind="$KEYS_PLAYLIST_RELOAD:$FZF_RELOAD_PLAYLIST+$FZF_POS_PLAYLIST" \
+        --bind="$KEYS_PLAYLIST_RELOAD,$KEYS_SHOW_PLAYLIST:$FZF_RELOAD_PLAYLIST+$FZF_POS_PLAYLIST" \
         --bind="$KEYS_PLAYLIST_REMOVE:execute-silent($0 --playlist $PLAYLIST_CMD_REMOVE)+$FZF_RELOAD_PLAYLIST" \
         --bind="$KEYS_PLAYLIST_UP:execute-silent($0 --playlist $PLAYLIST_CMD_UP)+up+$FZF_RELOAD_PLAYLIST" \
         --bind="$KEYS_PLAYLIST_DOWN:execute-silent($0 --playlist $PLAYLIST_CMD_DOWN)+down+$FZF_RELOAD_PLAYLIST" \