doc: improves merge-tools example with an overwrite of existing config
We highlight the fact that a user hgrc can overwrite the system wide
preconfiguration. As other benefit we show priority value other than 1 and shows
vimdiff configuration is usually directly available. This is valuable as vimdiff
is (surprisingly) a common request from user.
--- a/mercurial/help/config.txt Mon May 12 17:40:58 2014 -0700
+++ b/mercurial/help/config.txt Thu Aug 02 13:51:34 2012 +0200
@@ -821,6 +821,9 @@
# Give higher priority
kdiff3.priority = 1
+ # Changing the priority of preconfigured tool
+ vimdiff.priority = 0
+
# Define new tool
myHtmlTool.args = -m $local $other $base $output
myHtmlTool.regkey = Software\FooSoftware\HtmlMerge