#pragma section-numbers 2
= Power User Tools =
Hints for would-be power users

<<TableOfContents>>

== Built-in features ==
 * Topic:revsets - our powerful revision query language
 * Topic:filesets - our similarly powerful file query language
 * Topic:templating - the templater used by log and hgweb
 * Aliases - built-in command substitution

== Under-appreciated commands ==
 * [[Cmd:log|log -G]] - graph view of commits
 * [[Cmd:log|log -k]] - keyword search in commits
 * [[Cmd:help|help -k]] - keyword search in help
 * [[Cmd:commit|commit --amend]] - amend the last commit
 * [[Cmd:status|status --change]] - status output for a change
 * [[Cmd:status|status --rev a:b]] - status between two changes
 * Cmd:grep - search all of history for regular expressions
 * [[Cmd:import|import URL]] - import patch(es) from a URL

== Automation ==
 * [[Hooks]] - execute code for specific Mercurial events or commands
 * [[Topic:environment|HGPLAIN]] - environment variable to disable customizations
 * Cmd:identify - useful in makefiles
 * Cmd:root - useful in shell scripts
 * [[Cmd:log|log --template]] - useful in reporting
 * [[Cmd:status|status -n0]] - output suitable for xargs -0

== Advanced history editing ==
 * RebaseExtension
 * HisteditExtension
 * EvolveExtension
 * MqExtension
 * strip

== Niceties for customizers ==
 * ColorExtension - shiny colors
 * PagerExtension - for slow readers
 * ProgressExtension - for the impatient
 * contrib/*_completion - for the lazy

== Debugging ==
 * [[Cmd:help|help --debug]] - list deprecated and debugging commands
 * [[Cmd:showconfig|showconfig --debug]] - dump configuration info with paths
 * Cmd:debuginstall - show install information
 * --debug - run a command with full verbosity
 * --traceback - get a complete stack trace for any exception
 * --debugger - run a command with an interactive source-level debugger
 * Cmd:debugindex - dump raw revlog graph data
 * Cmd:debugdata - dump raw revlog revision contents data
 * Cmd:debugstate - dump raw dirstate contents

== Interesting reading ==
 * FileFormats - what all those files are
 * [[http://hgbook.red-bean.com/read/behind-the-scenes.html#x8-640004|Behind the scenes]] - an overview of the internal data structures
 * HandlingLargeFiles - how we deal with files of many megabytes
 * EncodingStrategy - how character encoding works

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