Mercurial > hg
annotate tests/test-pager.t @ 33377:5d63e5f40bea
revset: define successors revset
This revset returns all successors, including transit nodes and the source
nodes (to be consistent with existing revsets like "ancestors").
To filter out transit nodes, use `successors(X)-obsolete()`.
To filter out divergent case, use `successors(X)-divergent()-obsolete()`.
The revset could be useful to define rebase destination, like:
`max(successors(BASE)-divergent()-obsolete())`. The `max` is to deal with
splits.
There are other implementations where `successors` returns just one level of
successors, and `allsuccessors` returns everything. I think `successors`
returning all successors by default is more user friendly. We have seen
cases in production where people use 1-level `successors` while they really
want `allsuccessors`. So it seems better to just have one single revset
returning all successors by default to avoid user errors.
In the future we might want to add `depth` keyword argument to it and for
other revsets like `ancestors` etc. Or even build some flexible indexing
syntax [1] to satisfy people having the depth limit requirement.
[1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-July/101140.html
author | Jun Wu <quark@fb.com> |
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date | Mon, 10 Jul 2017 10:56:40 -0700 |
parents | fce4ed2912bb |
children | cc047a733f69 |
rev | line source |
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28319 | 1 $ cat >> fakepager.py <<EOF |
2 > import sys | |
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3 > printed = False |
28319 | 4 > for line in sys.stdin: |
5 > sys.stdout.write('paged! %r\n' % line) | |
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6 > printed = True |
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7 > if not printed: |
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8 > sys.stdout.write('paged empty output!\n') |
28319 | 9 > EOF |
10 | |
11 Enable ui.formatted because pager won't fire without it, and set up | |
12 pager and tell it to use our fake pager that lets us see when the | |
13 pager was running. | |
14 $ cat >> $HGRCPATH <<EOF | |
15 > [ui] | |
16 > formatted = yes | |
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17 > color = no |
28319 | 18 > [pager] |
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19 > pager = $PYTHON $TESTTMP/fakepager.py |
28319 | 20 > EOF |
21 | |
22 $ hg init repo | |
23 $ cd repo | |
24 $ echo a >> a | |
25 $ hg add a | |
26 $ hg ci -m 'add a' | |
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27 $ for x in `$PYTHON $TESTDIR/seq.py 1 10`; do |
28319 | 28 > echo a $x >> a |
29 > hg ci -m "modify a $x" | |
30 > done | |
31 | |
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32 By default diff and log are paged, but id is not: |
28319 | 33 |
34 $ hg diff -c 2 --pager=yes | |
35 paged! 'diff -r f4be7687d414 -r bce265549556 a\n' | |
36 paged! '--- a/a\tThu Jan 01 00:00:00 1970 +0000\n' | |
37 paged! '+++ b/a\tThu Jan 01 00:00:00 1970 +0000\n' | |
38 paged! '@@ -1,2 +1,3 @@\n' | |
39 paged! ' a\n' | |
40 paged! ' a 1\n' | |
41 paged! '+a 2\n' | |
42 | |
43 $ hg log --limit 2 | |
44 paged! 'changeset: 10:46106edeeb38\n' | |
45 paged! 'tag: tip\n' | |
46 paged! 'user: test\n' | |
47 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' | |
48 paged! 'summary: modify a 10\n' | |
49 paged! '\n' | |
50 paged! 'changeset: 9:6dd8ea7dd621\n' | |
51 paged! 'user: test\n' | |
52 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' | |
53 paged! 'summary: modify a 9\n' | |
54 paged! '\n' | |
55 | |
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56 $ hg id |
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57 46106edeeb38 tip |
28319 | 58 |
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59 We can control the pager from the config |
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60 |
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61 $ hg log --limit 1 --config 'ui.paginate=False' |
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62 changeset: 10:46106edeeb38 |
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63 tag: tip |
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64 user: test |
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65 date: Thu Jan 01 00:00:00 1970 +0000 |
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66 summary: modify a 10 |
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67 |
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68 $ hg log --limit 1 --config 'ui.paginate=0' |
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69 changeset: 10:46106edeeb38 |
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70 tag: tip |
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71 user: test |
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72 date: Thu Jan 01 00:00:00 1970 +0000 |
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73 summary: modify a 10 |
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74 |
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75 $ hg log --limit 1 --config 'ui.paginate=1' |
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76 paged! 'changeset: 10:46106edeeb38\n' |
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77 paged! 'tag: tip\n' |
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78 paged! 'user: test\n' |
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79 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' |
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80 paged! 'summary: modify a 10\n' |
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81 paged! '\n' |
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82 |
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83 We can enable the pager on id: |
28319 | 84 |
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85 BROKEN: should be paged |
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86 $ hg --config pager.attend-id=yes id |
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87 46106edeeb38 tip |
28319 | 88 |
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89 Setting attend-$COMMAND to a false value works, even with pager in |
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90 core: |
28319 | 91 $ hg --config pager.attend-diff=no diff -c 2 |
92 diff -r f4be7687d414 -r bce265549556 a | |
93 --- a/a Thu Jan 01 00:00:00 1970 +0000 | |
94 +++ b/a Thu Jan 01 00:00:00 1970 +0000 | |
95 @@ -1,2 +1,3 @@ | |
96 a | |
97 a 1 | |
98 +a 2 | |
99 | |
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100 Command aliases should have same behavior as main command |
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101 |
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102 $ hg history --limit 2 |
28319 | 103 paged! 'changeset: 10:46106edeeb38\n' |
104 paged! 'tag: tip\n' | |
105 paged! 'user: test\n' | |
106 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' | |
107 paged! 'summary: modify a 10\n' | |
108 paged! '\n' | |
109 paged! 'changeset: 9:6dd8ea7dd621\n' | |
110 paged! 'user: test\n' | |
111 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' | |
112 paged! 'summary: modify a 9\n' | |
113 paged! '\n' | |
114 | |
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115 Abbreviated command alias should also be paged |
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116 |
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117 $ hg hist -l 1 |
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118 paged! 'changeset: 10:46106edeeb38\n' |
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119 paged! 'tag: tip\n' |
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120 paged! 'user: test\n' |
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121 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' |
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122 paged! 'summary: modify a 10\n' |
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123 paged! '\n' |
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124 |
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125 Attend for an abbreviated command does not work |
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126 |
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127 $ hg --config pager.attend-ident=true ident |
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128 46106edeeb38 tip |
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129 |
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130 $ hg --config extensions.pager= --config pager.attend-ident=true ident |
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131 46106edeeb38 tip |
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132 |
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133 Pager should not start if stdout is not a tty. |
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134 |
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135 $ hg log -l1 -q --config ui.formatted=False |
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136 10:46106edeeb38 |
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137 |
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138 Pager should be disabled if pager.pager is empty (otherwise the output would |
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139 be silently lost.) |
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140 |
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141 $ hg log -l1 -q --config pager.pager= |
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142 10:46106edeeb38 |
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143 |
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144 Pager with color enabled allows colors to come through by default, |
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145 even though stdout is no longer a tty. |
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146 $ cat >> $HGRCPATH <<EOF |
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147 > [ui] |
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148 > color = always |
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149 > [color] |
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150 > mode = ansi |
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151 > EOF |
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152 $ hg log --limit 3 |
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153 paged! '\x1b[0;33mchangeset: 10:46106edeeb38\x1b[0m\n' |
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154 paged! 'tag: tip\n' |
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155 paged! 'user: test\n' |
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156 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' |
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157 paged! 'summary: modify a 10\n' |
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158 paged! '\n' |
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159 paged! '\x1b[0;33mchangeset: 9:6dd8ea7dd621\x1b[0m\n' |
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160 paged! 'user: test\n' |
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161 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' |
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162 paged! 'summary: modify a 9\n' |
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163 paged! '\n' |
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164 paged! '\x1b[0;33mchangeset: 8:cff05a6312fe\x1b[0m\n' |
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165 paged! 'user: test\n' |
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166 paged! 'date: Thu Jan 01 00:00:00 1970 +0000\n' |
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167 paged! 'summary: modify a 8\n' |
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168 paged! '\n' |
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169 |
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170 An invalid pager command name is reported sensibly if we don't have to |
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171 use shell=True in the subprocess call: |
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172 $ hg log --limit 3 --config pager.pager=this-command-better-never-exist |
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173 missing pager command 'this-command-better-never-exist', skipping pager |
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174 \x1b[0;33mchangeset: 10:46106edeeb38\x1b[0m (esc) |
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175 tag: tip |
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176 user: test |
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177 date: Thu Jan 01 00:00:00 1970 +0000 |
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178 summary: modify a 10 |
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179 |
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180 \x1b[0;33mchangeset: 9:6dd8ea7dd621\x1b[0m (esc) |
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181 user: test |
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182 date: Thu Jan 01 00:00:00 1970 +0000 |
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183 summary: modify a 9 |
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184 |
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185 \x1b[0;33mchangeset: 8:cff05a6312fe\x1b[0m (esc) |
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186 user: test |
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187 date: Thu Jan 01 00:00:00 1970 +0000 |
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188 summary: modify a 8 |
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189 |
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190 |
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191 A complicated pager command gets worse behavior. Bonus points if you can |
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192 improve this. |
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193 $ hg log --limit 3 \ |
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194 > --config pager.pager='this-command-better-never-exist --seriously' \ |
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195 > 2>/dev/null || true |
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196 |
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197 Pager works with shell aliases. |
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198 |
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199 $ cat >> $HGRCPATH <<EOF |
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200 > [alias] |
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201 > echoa = !echo a |
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202 > EOF |
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203 |
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204 $ hg echoa |
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205 a |
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206 BROKEN: should be paged |
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207 $ hg --config pager.attend-echoa=yes echoa |
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208 a |
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209 |
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210 Pager works with hg aliases including environment variables. |
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211 |
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212 $ cat >> $HGRCPATH <<'EOF' |
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213 > [alias] |
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214 > printa = log -T "$A\n" -r 0 |
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215 > EOF |
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216 |
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217 $ A=1 hg --config pager.attend-printa=yes printa |
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218 paged! '1\n' |
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219 $ A=2 hg --config pager.attend-printa=yes printa |
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220 paged! '2\n' |
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222 Something that's explicitly attended is still not paginated if the |
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223 pager is globally set to off using a flag: |
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224 $ A=2 hg --config pager.attend-printa=yes printa --pager=no |
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225 2 |
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226 |
29344 | 227 Pager should not override the exit code of other commands |
228 | |
229 $ cat >> $TESTTMP/fortytwo.py <<'EOF' | |
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230 > from mercurial import commands, registrar |
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232 > command = registrar.command(cmdtable) |
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233 > @command(b'fortytwo', [], 'fortytwo', norepo=True) |
29344 | 234 > def fortytwo(ui, *opts): |
235 > ui.write('42\n') | |
236 > return 42 | |
237 > EOF | |
238 | |
239 $ cat >> $HGRCPATH <<'EOF' | |
240 > [extensions] | |
241 > fortytwo = $TESTTMP/fortytwo.py | |
242 > EOF | |
243 | |
244 $ hg fortytwo --pager=on | |
245 paged! '42\n' | |
246 [42] | |
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247 |
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248 A command that asks for paging using ui.pager() directly works: |
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249 $ hg blame a |
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250 paged! ' 0: a\n' |
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251 paged! ' 1: a 1\n' |
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252 paged! ' 2: a 2\n' |
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253 paged! ' 3: a 3\n' |
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254 paged! ' 4: a 4\n' |
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255 paged! ' 5: a 5\n' |
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256 paged! ' 6: a 6\n' |
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257 paged! ' 7: a 7\n' |
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258 paged! ' 8: a 8\n' |
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259 paged! ' 9: a 9\n' |
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260 paged! '10: a 10\n' |
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261 but not with HGPLAIN |
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262 $ HGPLAIN=1 hg blame a |
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263 0: a |
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264 1: a 1 |
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265 2: a 2 |
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266 3: a 3 |
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267 4: a 4 |
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268 5: a 5 |
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269 6: a 6 |
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270 7: a 7 |
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271 8: a 8 |
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272 9: a 9 |
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273 10: a 10 |
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274 explicit flags work too: |
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275 $ hg blame --pager=no a |
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276 0: a |
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277 1: a 1 |
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278 2: a 2 |
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279 3: a 3 |
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280 4: a 4 |
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281 5: a 5 |
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282 6: a 6 |
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283 7: a 7 |
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284 8: a 8 |
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285 9: a 9 |
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286 10: a 10 |
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287 |
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288 A command with --output option: |
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289 |
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290 $ hg cat -r0 a |
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291 paged! 'a\n' |
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292 $ hg cat -r0 a --output=- |
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293 paged! 'a\n' |
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294 $ hg cat -r0 a --output=out |
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295 $ rm out |
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296 |
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297 Put annotate in the ignore list for pager: |
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298 $ cat >> $HGRCPATH <<EOF |
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299 > [pager] |
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300 > ignore = annotate |
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301 > EOF |
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302 $ hg blame a |
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303 0: a |
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304 1: a 1 |
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305 2: a 2 |
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306 3: a 3 |
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307 4: a 4 |
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308 5: a 5 |
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309 6: a 6 |
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310 7: a 7 |
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311 8: a 8 |
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312 9: a 9 |
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313 10: a 10 |
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314 |
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315 Environment variables like LESS and LV are set automatically: |
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316 $ cat > $TESTTMP/printlesslv.py <<EOF |
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317 > import os, sys |
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318 > sys.stdin.read() |
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319 > for name in ['LESS', 'LV']: |
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320 > sys.stdout.write(('%s=%s\n') % (name, os.environ.get(name, '-'))) |
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321 > sys.stdout.flush() |
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322 > EOF |
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323 |
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324 $ cat >> $HGRCPATH <<EOF |
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325 > [alias] |
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326 > noop = log -r 0 -T '' |
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327 > [ui] |
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328 > formatted=1 |
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329 > [pager] |
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330 > pager = $PYTHON $TESTTMP/printlesslv.py |
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331 > EOF |
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332 $ unset LESS |
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333 $ unset LV |
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334 $ hg noop --pager=on |
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335 LESS=FRX |
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336 LV=-c |
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337 $ LESS=EFGH hg noop --pager=on |
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338 LESS=EFGH |
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339 LV=-c |