Mercurial > hg
view contrib/tcsh_completion_build.sh @ 26845:7a77ee434179
help: replace some str.split() calls by str.partition() or str.rpartition()
Since Python 2.5 str has new methods: partition and rpartition. They are more
specialized than the usual split and rsplit, and they sometimes convey the
intent of code better and also are a bit faster (faster than split/rsplit with
maxsplit specified). Let's use them in appropriate places for a small speedup.
Example performance (partition):
$ python -m timeit 'assert "apple|orange|banana".split("|")[0] == "apple"'
1000000 loops, best of 3: 0.376 usec per loop
$ python -m timeit 'assert "apple|orange|banana".split("|", 1)[0] == "apple"'
1000000 loops, best of 3: 0.327 usec per loop
$ python -m timeit 'assert "apple|orange|banana".partition("|")[0] == "apple"'
1000000 loops, best of 3: 0.214 usec per loop
Example performance (rpartition):
$ python -m timeit 'assert "apple|orange|banana".rsplit("|")[-1] == "banana"'
1000000 loops, best of 3: 0.372 usec per loop
$ python -m timeit 'assert "apple|orange|banana".rsplit("|", 1)[-1] == "banana"'
1000000 loops, best of 3: 0.332 usec per loop
$ python -m timeit 'assert "apple|orange|banana".rpartition("|")[-1] == "banana"'
1000000 loops, best of 3: 0.219 usec per loop
author | Anton Shestakov <av6@dwimlabs.net> |
---|---|
date | Mon, 02 Nov 2015 23:37:14 +0800 |
parents | 2616325766e3 |
children |
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#!/bin/sh # # tcsh_completion_build.sh - script to generate tcsh completion # # # Copyright (C) 2005 TK Soh. # # This is free software; you can redistribute it and/or modify it under # the terms of the GNU General Public License as published by the Free # Software Foundation; either version 2 of the License, or (at your # option) any later version. # # # Description # ----------- # This script generates a tcsh source file to support completion # of Mercurial commands and options. # # Instruction: # ----------- # Run this script to generate the tcsh source file, and source # the file to add command completion support for Mercurial. # # tcsh% tcsh_completion.sh FILE # tcsh% source FILE # # If FILE is not specified, tcsh_completion will be generated. # # Bugs: # ---- # 1. command specific options are not supported # 2. hg commands must be specified immediately after 'hg'. # tcsh_file=${1-tcsh_completion} hg_commands=`hg --debug help | \ sed -e '1,/^list of commands:/d' \ -e '/^enabled extensions:/,$d' \ -e '/^additional help topics:/,$d' \ -e '/^ [^ ]/!d; s/[,:]//g;' | \ xargs -n5 | \ sed -e '$!s/$/ \\\\/g; 2,$s/^ */ /g'` hg_global_options=`hg -v help | \ sed -e '1,/global/d;/^ *-/!d; s/ [^- ].*//' | \ sed -e 's/ *$//; $!s/$/ \\\\/g; 2,$s/^ */ /g'` hg_version=`hg version | sed -e '1q'` script_name=`basename $0` cat > $tcsh_file <<END # # tcsh completion for Mercurial # # This file has been auto-generated by $script_name for # $hg_version # # Copyright (C) 2005 TK Soh. # # This is free software; you can redistribute it and/or modify it under # the terms of the GNU General Public License as published by the Free # Software Foundation; either version 2 of the License, or (at your # option) any later version. # complete hg \\ 'n/--cwd/d/' 'n/-R/d/' 'n/--repository/d/' \\ 'C/-/($hg_global_options)/' \\ 'p/1/($hg_commands)/' END