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‎.github/workflows/release.yml‎

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name: release
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on:
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push:
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branch: default
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jobs:
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build:
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runs-on: ubuntu-latest
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container: ghcr.io/orbitalquark/textadept-build:v1.0
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steps:
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- name: Checkout textadept
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uses: actions/checkout@v2
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with:
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repository: orbitalquark/textadept
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path: textadept
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- name: Checkout textadept-build dependencies
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uses: actions/checkout@v2
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with:
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repository: orbitalquark/textadept-build
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path: textadept-build
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- name: Checkout textadept-file-diff module
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uses: actions/checkout@v2
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with:
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path: textadept/modules/file_diff
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- name: Build
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shell: bash
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run: |
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mv textadept-build/* textadept/src && make -C textadept/src lua
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cd textadept/modules/file_diff
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make deps && make -j
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cd .. && zip -r ../../file_diff.zip file_diff -x "*.zip" "*.h" "*.o" \
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"*.def" "*.la" file_diff/.github
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- name: Upload artifacts
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uses: actions/upload-artifact@v2
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with:
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name: artifacts
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path: file_diff.zip
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release:
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runs-on: ubuntu-latest
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needs: build
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steps:
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- name: Checkout
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uses: actions/checkout@v2
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- name: Tag
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run: |
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git tag latest
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git push -f origin latest
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- name: Download artifacts
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uses: actions/download-artifact@v2
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with:
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name: artifacts
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- name: Create release
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uses: ncipollo/release-action@v1
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with:
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name: latest
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tag: latest
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allowUpdates: true
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body: Latest automated build (ignore github-actions' release date)
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artifacts: file_diff.zip
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token: ${{ secrets.GITHUB_TOKEN }}
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cleanup:
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runs-on: ubuntu-latest
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needs: [build, release]
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steps:
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- name: Remove older build artifacts
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uses: c-hive/gha-remove-artifacts@v1
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with:
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age: '1 minute'

‎LICENSE‎

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The MIT License
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Copyright (c) 2015-2020 Mitchell
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.

‎Makefile‎

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# Copyright 2017-2020 Mitchell. See LICENSE.
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ta = ../..
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ta_src = $(ta)/src
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ta_lua = $(ta_src)/lua/src
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CXX = g++
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CXXFLAGS = -std=c++11 -pedantic -fPIC -Wall
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LDFLAGS = -Wl,--retain-symbols-file -Wl,$(ta_src)/lua.sym
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all: diff.so diff.dll diff-curses.dll diffosx.so
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clean: ; rm -f *.o *.so *.dll
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# Platform objects.
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CROSS_WIN = i686-w64-mingw32-
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CROSS_OSX = x86_64-apple-darwin17-c++
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diff.so: diff.o ; $(CXX) -shared $(CXXFLAGS) -o $@ $^ $(LDFLAGS)
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diff.dll: diff-win.o lua.la
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$(CROSS_WIN)$(CXX) -shared -static-libgcc -static-libstdc++ $(CXXFLAGS) -o \
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$@ $^ $(LDFLAGS)
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diff-curses.dll: diff-win.o lua-curses.la
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$(CROSS_WIN)$(CXX) -shared -static-libgcc -static-libstdc++ $(CXXFLAGS) -o \
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$@ $^ $(LDFLAGS)
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diffosx.so: diff-osx.o
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$(CROSS_OSX) -shared $(CXXFLAGS_OSX) -undefined dynamic_lookup -o $@ $^
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diff.o: diff.cxx ; $(CXX) -c $(CXXFLAGS) -I$(ta_lua) -o $@ $^
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diff-win.o: diff.cxx
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$(CROSS_WIN)$(CXX) -c $(CXXFLAGS) -DLUA_BUILD_AS_DLL -DLUA_LIB -I$(ta_lua) \
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-o $@ $^
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diff-osx.o: diff.cxx ; $(CROSS_OSX) -c $(CXXFLAGS_OSX) -I$(ta_lua) -o $@ $^
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lua.def:
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echo LIBRARY \"textadept.exe\" > $@ && echo EXPORTS >> $@
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grep -v "^#" $(ta_src)/lua.sym >> $@
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lua.la: lua.def ; $(CROSS_WIN)dlltool -d $< -l $@
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lua-curses.def:
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echo LIBRARY \"textadept-curses.exe\" > $@ && echo EXPORTS >> $@
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grep -v "^#" $(ta_src)/lua.sym >> $@
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lua-curses.la: lua-curses.def ; $(CROSS_WIN)dlltool -d $< -l $@
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# Documentation.
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cwd = $(shell pwd)
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docs: luadoc README.md
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README.md: init.lua
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cd $(ta)/scripts && luadoc --doclet markdowndoc $(cwd)/$< > $(cwd)/$@
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sed -i -e '1,+4d' -e '6c# File Diff' -e '7d' -e 's/^##/#/;' $@
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luadoc: init.lua
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cd $(ta)/modules && luadoc -d $(cwd) --doclet lua/tadoc $(cwd)/$< \
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--ta-home=$(shell readlink -f $(ta))
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sed -i 's/_HOME.\+\?_HOME/_HOME/;' tags
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# External diff_match_patch dependency.
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deps: diff_match_patch.h
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diff_match_patch_zip = 7f95b37e554453262e2bcda830724fc362614103.zip
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$(diff_match_patch_zip):
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wget https://github.com/leutloff/diff-match-patch-cpp-stl/archive/$@
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diff_match_patch.h: | $(diff_match_patch_zip) ; unzip -j $| "*/$@"

‎README.md‎

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# File Diff
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Two-way file comparison for Textadept.
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Install this module by copying it into your *~/.textadept/modules/* directory
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or Textadept's *modules/* directory, and then putting the following in your
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*~/.textadept/init.lua*:
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require('file_diff')
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## Usage
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A sample workflow is this:
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1. Start comparing two files via the "Compare Files" submenu in the "Tools"
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menu.
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2. The caret is initially placed in the file on the left.
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3. Go to the next change via menu or key binding.
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4. Merge the change from the other buffer into the current one (right to
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left) via menu or key binding.
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5. Go to the next change via menu or key binding.
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6. Merge the change from the current buffer into the other one (left to
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right) via menu or key binding.
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7. Repeat as necessary.
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Note: merging can be performed wherever the caret is placed when jumping
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between changes, even if one buffer has a change and the other does not
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(additions or deletions).
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## Key Bindings
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Windows, Linux, BSD|macOS|Terminal|Command
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-------------------|-----|--------|-------
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**Tools** | | |
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F6 |F6 |F6 |Compare files...
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Shift+F6 |⇧F6 |S-F6 |Compare the buffers in two split views
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Alt+Down |⌥⇣ |M-Down |Goto next difference
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Alt+Up |⌥⇡ |M-Up |Goto previous difference
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Alt+Left |⌥⇠ |M-Left |Merge left
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Alt+Right |⌥⇢ |M-Right |Merge right
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## Fields defined by `file_diff`
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<a id="file_diff.INDIC_ADDITION"></a>
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### `file_diff.INDIC_ADDITION` (number)
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The indicator number for text added within lines.
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<a id="file_diff.INDIC_DELETION"></a>
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### `file_diff.INDIC_DELETION` (number)
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The indicator number for text deleted within lines.
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<a id="file_diff.MARK_ADDITION"></a>
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### `file_diff.MARK_ADDITION` (number)
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The marker for line additions.
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<a id="file_diff.MARK_DELETION"></a>
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### `file_diff.MARK_DELETION` (number)
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The marker for line deletions.
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<a id="file_diff.MARK_MODIFICATION"></a>
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### `file_diff.MARK_MODIFICATION` (number)
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The marker for line modifications.
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<a id="file_diff.theme"></a>
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### `file_diff.theme` (string)
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The theme to use, either 'dark' or 'light'.
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This is not the theme used with Textadept.
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Depending on this setting, additions will be colored 'dark_green' or
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'light_green', deletions will be colored 'dark_red' or 'light_red', and so
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on.
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The default value is auto-detected.
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## Functions defined by `file_diff`
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<a id="_G.diff"></a>
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### `_G.diff`(*text1, text2*)
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Returns a list that represents the differences between strings *text1* and
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*text2*.
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Each consecutive pair of elements in the returned list represents a "diff".
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The first element is an integer: 0 for a deletion, 1 for an insertion, and 2
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for equality. The second element is the associated diff text.
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Parameters:
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* *`text1`*: String to compare against.
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* *`text2`*: String to compare.
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Usage:
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* `diffs = diff(text1, text2)
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for i = 1, #diffs, 2 do print(diffs[i], diffs[i + 1]) end`
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Return:
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* list of differences
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<a id="file_diff.goto_change"></a>
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### `file_diff.goto_change`(*next*)
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Jumps to the next or previous difference between the two files depending on
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boolean *next*.
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[`file_diff.start()`](#file_diff.start) must have been called previously.
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Parameters:
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* *`next`*: Whether to go to the next or previous difference relative to the
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current line.
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<a id="file_diff.merge"></a>
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### `file_diff.merge`(*left*)
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Merges a change from one buffer to another, depending on the change under
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the caret and the merge direction.
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Parameters:
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* *`left`*: Whether to merge from right to left or left to right.
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<a id="file_diff.start"></a>
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### `file_diff.start`(*file1, file2, horizontal*)
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Highlight differences between files *file1* and *file2*, or the user-selected
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files.
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Parameters:
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* *`file1`*: Optional name of the older file. If `-`, uses the current
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buffer. If `nil`, the user is prompted for a file.
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* *`file2`*: Optional name of the newer file. If `-`, uses the current
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buffer. If `nil`, the user is prompted for a file.
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* *`horizontal`*: Optional flag specifying whether or not to split the view
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horizontally. The default value is `false`, comparing the two files
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side-by-side.
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---

‎diff.cxx‎

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// Copyright 2017-2020 Mitchell. See LICENSE.
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#include "diff_match_patch.h"
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extern "C" {
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#include "lua.h"
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#include "lualib.h"
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#include "lauxlib.h"
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}
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/** diff() Lua function. */
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static int diff(lua_State *L) {
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diff_match_patch<std::string> dmp;
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auto diffs = dmp.diff_main(
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luaL_checkstring(L, 1), luaL_checkstring(L, 2), false);
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dmp.diff_cleanupSemantic(diffs);
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lua_createtable(L, diffs.size() * 2, 0);
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int len = 1;
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for(auto& diff : diffs) {
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lua_pushnumber(L, diff.operation), lua_rawseti(L, -2, len++);
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lua_pushstring(L, diff.text.c_str()), lua_rawseti(L, -2, len++);
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}
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return 1;
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}
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extern "C" {
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int luaopen_diff(lua_State *L) {
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return (lua_pushcfunction(L, diff), 1);
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}
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// Platform-specific Lua library entry points.
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LUALIB_API int luaopen_file_diff_diff(lua_State *L) {
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return luaopen_diff(L);
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}
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LUALIB_API int luaopen_file_diff_diffosx(lua_State *L) {
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return luaopen_diff(L);
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}
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}

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