Mercurial > hg
annotate hgext/pager.py @ 26362:3bfc473f4d33
gitweb, monoblue: fix vertical align of spans in .sourcelines
Empty lines in file view could produce an inexplicable margin before the next
line (most noticeable in browsers on webkit/blink engine). That was making
empty lines seem taller than the rest.
Instead of using default vertical align, let's set it to 'top'.
This issue is actually present in paper, and only recently got into gitweb
(2239626369f5) and monoblue (119202d4d7a4). There's a bit more to it in paper,
so that will be dealt with in a future patch.
Recipe to see live: preferably using a webkit/blink browser, such as chromium,
browse a file with empty lines, e.g. https://selenic.com/hg/file/3.5/README#l8
Selecting a block of text that includes empty lines will reveal white "breaks"
in the selection. Highlighted line (#l8) also shows such a break below itself.
author | Anton Shestakov <av6@dwimlabs.net> |
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date | Fri, 25 Sep 2015 03:02:38 +0800 |
parents | 59d794154e8d |
children | 499d5c98e98b |
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1 # pager.py - display output using a pager |
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2 # |
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3 # Copyright 2008 David Soria Parra <dsp@php.net> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 # |
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8 # To load the extension, add it to your configuration file: |
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9 # |
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10 # [extension] |
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11 # pager = |
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12 # |
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13 # Run "hg help pager" to get info on configuration. |
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14 |
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15 '''browse command output with an external pager |
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16 |
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17 To set the pager that should be used, set the application variable:: |
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18 |
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19 [pager] |
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20 pager = less -FRX |
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21 |
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22 If no pager is set, the pager extensions uses the environment variable |
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23 $PAGER. If neither pager.pager, nor $PAGER is set, no pager is used. |
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24 |
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25 You can disable the pager for certain commands by adding them to the |
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26 pager.ignore list:: |
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27 |
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28 [pager] |
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29 ignore = version, help, update |
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30 |
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31 You can also enable the pager only for certain commands using |
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32 pager.attend. Below is the default list of commands to be paged:: |
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33 |
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34 [pager] |
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35 attend = annotate, cat, diff, export, glog, log, qdiff |
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36 |
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37 Setting pager.attend to an empty value will cause all commands to be |
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38 paged. |
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39 |
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40 If pager.attend is present, pager.ignore will be ignored. |
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41 |
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42 Lastly, you can enable and disable paging for individual commands with |
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43 the attend-<command> option. This setting takes precedence over |
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44 existing attend and ignore options and defaults:: |
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45 |
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46 [pager] |
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47 attend-cat = false |
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48 |
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49 To ignore global commands like :hg:`version` or :hg:`help`, you have |
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50 to specify them in your user configuration file. |
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51 |
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52 The --pager=... option can also be used to control when the pager is |
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53 used. Use a boolean value like yes, no, on, off, or use auto for |
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54 normal behavior. |
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55 |
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56 ''' |
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57 |
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58 import atexit, sys, os, signal, subprocess |
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59 from mercurial import commands, dispatch, util, extensions, cmdutil |
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60 from mercurial.i18n import _ |
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61 |
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62 # Note for extension authors: ONLY specify testedwith = 'internal' for |
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63 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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64 # be specifying the version(s) of Mercurial they are tested with, or |
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65 # leave the attribute unspecified. |
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66 testedwith = 'internal' |
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67 |
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68 def _pagersubprocess(ui, p): |
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69 pager = subprocess.Popen(p, shell=True, bufsize=-1, |
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70 close_fds=util.closefds, stdin=subprocess.PIPE, |
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71 stdout=sys.stdout, stderr=sys.stderr) |
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72 |
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73 stdout = os.dup(sys.stdout.fileno()) |
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74 stderr = os.dup(sys.stderr.fileno()) |
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75 os.dup2(pager.stdin.fileno(), sys.stdout.fileno()) |
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76 if ui._isatty(sys.stderr): |
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77 os.dup2(pager.stdin.fileno(), sys.stderr.fileno()) |
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78 |
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79 @atexit.register |
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80 def killpager(): |
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81 if util.safehasattr(signal, "SIGINT"): |
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82 signal.signal(signal.SIGINT, signal.SIG_IGN) |
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83 pager.stdin.close() |
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84 os.dup2(stdout, sys.stdout.fileno()) |
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85 os.dup2(stderr, sys.stderr.fileno()) |
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86 pager.wait() |
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87 |
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88 def _runpager(ui, p): |
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89 _pagersubprocess(ui, p) |
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90 |
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91 def uisetup(ui): |
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92 if '--debugger' in sys.argv or not ui.formatted(): |
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94 | |
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95 def pagecmd(orig, ui, options, cmd, cmdfunc): |
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96 p = ui.config("pager", "pager", os.environ.get("PAGER")) |
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97 usepager = False |
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98 always = util.parsebool(options['pager']) |
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99 auto = options['pager'] == 'auto' |
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100 |
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101 if not p: |
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102 pass |
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103 elif always: |
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104 usepager = True |
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105 elif not auto: |
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106 usepager = False |
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107 else: |
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108 attend = ui.configlist('pager', 'attend', attended) |
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110 cmds, _ = cmdutil.findcmd(cmd, commands.table) |
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111 |
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112 for cmd in cmds: |
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113 var = 'attend-%s' % cmd |
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114 if ui.config('pager', var): |
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115 usepager = ui.configbool('pager', var) |
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116 break |
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117 if (cmd in attend or |
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118 (cmd not in ignore and not attend)): |
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119 usepager = True |
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120 break |
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121 |
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122 setattr(ui, 'pageractive', usepager) |
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123 |
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124 if usepager: |
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125 ui.setconfig('ui', 'formatted', ui.formatted(), 'pager') |
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126 ui.setconfig('ui', 'interactive', False, 'pager') |
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127 if util.safehasattr(signal, "SIGPIPE"): |
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128 signal.signal(signal.SIGPIPE, signal.SIG_DFL) |
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129 _runpager(ui, p) |
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130 return orig(ui, options, cmd, cmdfunc) |
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131 |
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132 # Wrap dispatch._runcommand after color is loaded so color can see |
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133 # ui.pageractive. Otherwise, if we loaded first, color's wrapped |
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134 # dispatch._runcommand would run without having access to ui.pageractive. |
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135 def afterloaded(loaded): |
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136 extensions.wrapfunction(dispatch, '_runcommand', pagecmd) |
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137 extensions.afterloaded('color', afterloaded) |
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138 |
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139 def extsetup(ui): |
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140 commands.globalopts.append( |
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141 ('', 'pager', 'auto', |
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142 _("when to paginate (boolean, always, auto, or never)"), |
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143 _('TYPE'))) |
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144 |
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145 attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff'] |