diff --git a/tools/hooks/README.md b/tools/hooks/README.md
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+# Git Integration Hooks
+
+This folder contains installable scripts for [Git hooks] and [merge drivers].
+Use of these hooks and drivers is optional and they must be installed
+explicitly before they take effect.
+
+To install the current set of hooks, or update if new hooks are added, run
+`install.bat` (Windows) or `install.sh` (Unix-like) as appropriate.
+
+Hooks expect a Unix-like environment on the backend. Usually this is handled
+automatically by GUI tools like TortoiseGit and GitHub for Windows, but
+[Git for Windows] is an option if you prefer to use a CLI even on Windows.
+
+## Current Hooks
+
+* **Pre-commit**: Runs [mapmerge2] on changed maps, if any.
+* **DMI merger**: Attempts to [fix icon conflicts] when performing a git merge.
+  If it succeeds, the file is marked merged. If it fails, it logs what states
+  are still in conflict and adds them to the .dmi file, where the desired
+  resolution can be chosen.
+
+## Adding New Hooks
+
+New [Git hooks] may be added by creating a file named `<hook-name>.hook` in
+this directory. Git determines what hooks are available and what their names
+are. The install script copies the `.hook` file into `.git/hooks`, so editing
+the `.hook` file will require a reinstall.
+
+New [merge drivers] may be added by adding a shell script named `<ext>.merge`
+and updating `.gitattributes` in the root of the repository to include the line
+`*.<ext> merge=<ext>`. The install script will set up the merge driver to point
+to the `.merge` file directly, and editing it will not require a reinstall.
+
+`tools/hooks/python.sh` may be used as a trampoline to ensure that the correct
+version of Python is found.
+
+[Git hooks]: https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks
+[merge drivers]: https://git-scm.com/docs/gitattributes#_performing_a_three_way_merge
+[Git for Windows]: https://gitforwindows.org/
+[mapmerge2]: ../mapmerge2/README.md
+[fix icon conflicts]: ../mapmerge2/merge_driver_dmi.py
diff --git a/tools/hooks/dmi.merge b/tools/hooks/dmi.merge
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+++ b/tools/hooks/dmi.merge
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+#!/bin/bash
+exec tools/hooks/python.sh -m merge_driver_dmi "$@"
diff --git a/tools/hooks/install.bat b/tools/hooks/install.bat
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+++ b/tools/hooks/install.bat
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+@echo off
+cd %~dp0
+for %%f in (*.hook) do (
+	echo Installing hook: %%~nf
+	copy %%f ..\..\.git\hooks\%%~nf >nul
+)
+for %%f in (*.merge) do (
+	echo Installing merge driver: %%~nf
+	echo [merge "%%~nf"]^
+
+	driver = tools/hooks/%%f %%P %%O %%A %%B %%L >> ..\..\.git\config
+)
+echo Installing Python dependencies
+python -m pip install -r ..\mapmerge2\requirements.txt
+echo Done
+pause
diff --git a/tools/hooks/install.sh b/tools/hooks/install.sh
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+++ b/tools/hooks/install.sh
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+#!/bin/bash
+set -e
+shopt -s nullglob
+cd "$(dirname "$0")"
+for f in *.hook; do
+	echo Installing hook: ${f%.hook}
+	cp $f ../../.git/hooks/${f%.hook}
+done
+for f in *.merge; do
+	echo Installing merge driver: ${f%.merge}
+	git config --replace-all merge.${f%.merge}.driver "tools/hooks/$f %P %O %A %B %L"
+done
+echo Installing Python dependencies
+./python.sh -m pip install -r ../mapmerge2/requirements.txt
+echo "Done"
diff --git a/tools/hooks/pre-commit.hook b/tools/hooks/pre-commit.hook
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+++ b/tools/hooks/pre-commit.hook
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+#!/bin/bash
+exec tools/hooks/python.sh -m precommit
diff --git a/tools/hooks/python.sh b/tools/hooks/python.sh
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+++ b/tools/hooks/python.sh
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+#!/bin/bash
+set -e
+if command -v python3 >/dev/null 2>&1; then
+	PY=python3
+else
+	PY=python
+fi
+PATHSEP=$($PY - <<'EOF'
+import sys, os
+if sys.version_info.major != 3 or sys.version_info.minor < 6:
+	sys.stderr.write("Python 3.6+ is required: " + sys.version + "\n")
+	exit(1)
+print(os.pathsep)
+EOF
+)
+export PYTHONPATH=tools/mapmerge2/${PATHSEP}${PYTHONPATH}
+$PY "$@"