<!--
Copyright 2020, Data61, CSIRO (ABN 41 687 119 230)
SPDX-License-Identifier: BSD-2-Clause
-->
============================
Graphical Diff for Mercurial
============================
This code lets you do a graphical diff in mercurial of Isabelle files
using FileMerge, a OS X merge program.
There are two parts:
1. Setting up mercurial to use FileMerge
2. Running a preprocessor script over the Isabelle files to produce Unicode.
======
Usage
======
hg opendiff
=====================================
Setting up mercurial to use FileMerge
=====================================
As documented at
http://mercurial.selenic.com/wiki/TipsAndTricks#Using_FileMerge.app.2BAC8-opendiff_as_the_diff_program_.28OS_X.29
1. Add the below to your .hgrc file
[extensions]
hgext.extdiff =
[extdiff]
cmd.opendiff = fmdiff
2. Add fmdiff to a folder somewhere in your path.
http://soft.vub.ac.be/svn-gen/bdefrain/fmscripts/
=======================================
Setting up a predecessor for FileMerge
=======================================
FileMerge doesn't understand x-symbols, but can run a preprocessor over
files first before it does a diff. (It appears as though you can't use
FileMerge to merge files when you do this.)
Thus, symbols.py does a find/replace on various x-symbols and replaces
them with their Unicode equivalents.
In FileMerge, go to FileMerge->Preferences…->Filters
Below the current filters, double-click and add:
thy ~/xsymbol.py $(FILE) Filtered No
Change the location to where the xsymbol script is located.
092b1207f7