misc: initial commit

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true

LICENSE

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+MIT License
+
+Copyright (c) 2022 Adam Christiansen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Plecostomus
+
+A simple command history filter for the
+[fish shell](https://github.com/fish-shell/fish-shell).
+
+## Features
+
+- Use regex filters to prevent commands from being saved in the command
+  history.
+- Out of the box, commands that begin with one or more spaces are ignored.
+- That's it - nothing else!
+
+## Requirements
+
+* [fish](https://github.com/fish-shell/fish-shell) (3.0.0 or higher)
+
+## Installation
+
+### Using [Fisher](https://github.com/jorgebucaran/fisher)
+
+```sh
+fisher install adamchristiansen/plecostomus
+```
+
+## Configuration
+
+Filters can be added by modifying the `plecostomus_regex_patterns` universal
+variable, which is an array of regex patterns to ignore. By default it is
+
+```sh
+set -U plecostomus_regex_patterns '^ +'
+```
+
+## Alternatives
+
+This plugin is simple by design, and supports only regex filtering. It is
+simple and fast. If more features are needed, consider using:
+
+- [Sponge](https://github.com/meaningful-ooo/sponge)

conf.d/plecostomus.fish

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+set -g plecostomus_version 1.0.0
+
+# The default ignore patterns
+if not set -qU plecostomus_regex_patterns
+  set -U plecostomus_regex_patterns '^ +'
+end
+
+# Load the handlers
+functions --query __plecostomus_preexec __plecostomus_postexec
+
+function __plecostomus_install --on-event plecostomus_install
+  set -g __plecostomus_command ''
+end
+
+function __plecostomus_update --on-event plecostomus_update
+  # Nothing to do
+end
+
+function __plecostomus_uninstall --on-event plecostomus_uninstall
+  set -eU plecostomus_regex_patterns
+  set -eg __plecostomus_command
+  set -eg plecostomus_version
+end

functions/__plecostomus_postexec.fish

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+function __plecostomus_postexec --on-event fish_postexec
+  for pattern in $plecostomus_regex_patterns
+    if builtin string match -rq -- $pattern $__plecostomus_command
+      builtin history delete --case-sensitive --exact -- $__plecostomus_command
+      break
+    end
+  end
+  builtin history save
+end

functions/__plecostomus_preexec.fish

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+function __plecostomus_preexec -e fish_preexec -a command
+  set -g __plecostomus_command $command
+end