Split recents by fileset

So far, the recently chosen characters were shared among all instances
of `rofimoji`, no matter which files were actually shown.

Now, we show and save them per fileset, which is an improvement.
However, if one file is used in multiple filesets, their usage is not
shared, but separate. A solution for this seems to complicated for what
we try to achieve here.

The old `recents` file will be migrated on startup, if necessary.

Many thanks to @will-lynas for reporting this and working with me to
find a good solution.

Issue: #173

CHANGELOG.md

@@ -1,10 +1,11 @@
 # [NEXT]
-## Added
-- Support for [tofi](https://github.com/philj56/tofi/), [bemenu](https://github.com/Cloudef/bemenu) and [wmenu](https://git.sr.ht/~adnano/wmenu) as selectors
-
 ## Changed
+- Only show recent characters from the same fileset. (#173)
 - Updates to Gitmoji and FontAwesome.
 
+## Added
+- Support for [tofi](https://github.com/philj56/tofi/), [bemenu](https://github.com/Cloudef/bemenu) and [wmenu](https://git.sr.ht/~adnano/wmenu) as selectors
+
 # [6.2.0]
 ## Added
 - Support dmenu as selector.

src/picker/mode.py

@@ -119,7 +119,9 @@ def __parse_args(self) -> None:
         self.clipboarder = Clipboarder.best_option(self.args.clipboarder)
 
     def show_characters(self, state: State) -> None:
-        recent_characters = self.__format_recent_characters(load_recent_characters(self.args.max_recent))
+        recent_characters = self.__format_recent_characters(
+            load_recent_characters(self.args.max_recent, self.args.files)
+        )
 
         state.output = "\x00markup-rows\x1ftrue\n"
         state.output += "\x00use-hot-keys\x1ftrue\n"
@@ -149,7 +151,9 @@ def __format_characters(self, characters: Dict[str, str]) -> List[str]:
 
     def handle_shortcuts(self, state: State) -> None:
         if 10 <= state.return_code <= 19:
-            state.processed_characters = load_recent_characters(self.args.max_recent)[state.return_code - 10]
+            state.processed_characters = load_recent_characters(self.args.max_recent, self.args.files)[
+                state.return_code - 10
+            ]
             state.reset_current_input()
             state.step += 2
             return

src/picker/recent.py

@@ -3,20 +3,25 @@
 from .paths import *
 
 
-def load_recent_characters(max_recent: int) -> List[str]:
+def load_recent_characters(max_recent: int, files: List[str]) -> List[str]:
     try:
-        return [char.strip("\n") for char in recents_file_location.read_text().strip("\n").split("\n")][:max_recent]
+        return [char.strip("\n") for char in __filename_for(files).read_text().strip("\n").split("\n")][:max_recent]
     except FileNotFoundError:
         return []
+    except NotADirectoryError:
+        recents = [char.strip("\n") for char in recents_file_location.read_text().strip("\n").split("\n")][:max_recent]
+        recents_file_location.unlink()
+        save_recent_characters("".join(recents), max_recent, files)
+        return recents
 
 
-def save_recent_characters(new_characters: str, max_recent: int) -> None:
+def save_recent_characters(new_characters: str, max_recent: int, files: List[str]) -> None:
     if max_recent == 0:
         return
     max_recent = min(max_recent, 10)
 
-    old_file_name = recents_file_location
-    new_file_name = old_file_name.with_name("recent.tmp")
+    old_file_name = __filename_for(files)
+    new_file_name = old_file_name.with_suffix(".tmp")
 
     new_file_name.parent.mkdir(parents=True, exist_ok=True)
     with new_file_name.open("w+") as new_file:
@@ -37,3 +42,7 @@ def save_recent_characters(new_characters: str, max_recent: int) -> None:
             pass
 
     new_file_name.rename(old_file_name)
+
+
+def __filename_for(files: List[str]) -> Path:
+    return recents_file_location / "-".join(files)

src/picker/standalone.py

@@ -1,5 +1,5 @@
 import sys
-from typing import Dict, List, Tuple, Union
+from typing import List, Tuple, Union
 
 from . import emoji_data
 from .action import execute_action
@@ -30,22 +30,22 @@ def standalone(self) -> None:
             self.args.actions = [action]
 
         if isinstance(value, Shortcut):
-            characters = load_recent_characters(self.args.max_recent)[value.index]
+            characters = load_recent_characters(self.args.max_recent, self.args.files)[value.index]
         else:
             characters = self.__process_chosen_characters(value)
 
         if Action.MENU in self.args.actions:
             self.args.actions = self.selector.show_action_menu(self.args.selector_args)
 
-        save_recent_characters(characters, self.args.max_recent)
+        save_recent_characters(characters, self.args.max_recent, self.args.files)
         execute_action(characters, self.args.actions, self.active_window, self.args.typer, self.args.clipboarder)
 
     def __open_main_selector_window(self) -> Tuple[Union[Action, DEFAULT, CANCEL], Union[List[str], Shortcut]]:
         return self.selector.show_character_selection(
             read_characters_from_files(
                 self.args.files, load_frecent_characters() if self.args.frecency else [], self.args.use_additional
             ),
-            load_recent_characters(self.args.max_recent),
+            load_recent_characters(self.args.max_recent, self.args.files),
             self.args.prompt,
             self.args.show_description,
             self.args.use_icons,