Mercurial > hg
annotate mercurial/help/revsets.txt @ 29030:18c1b107898e stable
revsets: add docs for '%' operator
author | Sean Farley <sean@farley.io> |
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date | Wed, 27 Apr 2016 14:02:18 -0700 |
parents | 97811ff79647 |
children | 96358865edb3 |
rev | line source |
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11382 | 1 Mercurial supports a functional language for selecting a set of |
2 revisions. | |
3 | |
4 The language supports a number of predicates which are joined by infix | |
5 operators. Parenthesis can be used for grouping. | |
6 | |
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7 Identifiers such as branch names may need quoting with single or |
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8 double quotes if they contain characters like ``-`` or if they match |
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9 one of the predefined predicates. |
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10 |
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11 Special characters can be used in quoted identifiers by escaping them, |
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12 e.g., ``\n`` is interpreted as a newline. To prevent them from being |
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13 interpreted, strings can be prefixed with ``r``, e.g. ``r'...'``. |
11382 | 14 |
15 There is a single prefix operator: | |
16 | |
17 ``not x`` | |
18 Changesets not in x. Short form is ``! x``. | |
19 | |
20 These are the supported infix operators: | |
21 | |
22 ``x::y`` | |
23 A DAG range, meaning all changesets that are descendants of x and | |
24 ancestors of y, including x and y themselves. If the first endpoint | |
25 is left out, this is equivalent to ``ancestors(y)``, if the second | |
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26 is left out it is equivalent to ``descendants(x)``. |
11382 | 27 |
28 An alternative syntax is ``x..y``. | |
29 | |
30 ``x:y`` | |
31 All changesets with revision numbers between x and y, both | |
32 inclusive. Either endpoint can be left out, they default to 0 and | |
33 tip. | |
34 | |
35 ``x and y`` | |
36 The intersection of changesets in x and y. Short form is ``x & y``. | |
37 | |
38 ``x or y`` | |
39 The union of changesets in x and y. There are two alternative short | |
40 forms: ``x | y`` and ``x + y``. | |
41 | |
42 ``x - y`` | |
43 Changesets in x but not in y. | |
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44 |
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45 ``x % y`` |
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46 Changesets that are ancestors of x but not ancestors of y (i.e. ::x - ::y). |
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47 This is shorthand notation for ``only(x, y)`` (see below). The second |
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48 argument is optional and, if left out, is equivalent to ``only(x)``. |
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49 |
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50 ``x^n`` |
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51 The nth parent of x, n == 0, 1, or 2. |
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52 For n == 0, x; for n == 1, the first parent of each changeset in x; |
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53 for n == 2, the second parent of changeset in x. |
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54 |
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55 ``x~n`` |
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56 The nth first ancestor of x; ``x~0`` is x; ``x~3`` is ``x^^^``. |
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57 |
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58 There is a single postfix operator: |
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59 |
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60 ``x^`` |
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61 Equivalent to ``x^1``, the first parent of each changeset in x. |
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62 |
11382 | 63 |
64 The following predicates are supported: | |
65 | |
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66 .. predicatesmarker |
11382 | 67 |
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68 New predicates (known as "aliases") can be defined, using any combination of |
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69 existing predicates or other aliases. An alias definition looks like:: |
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70 |
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71 <alias> = <definition> |
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72 |
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73 in the ``revsetalias`` section of a Mercurial configuration file. Arguments |
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74 of the form `a1`, `a2`, etc. are substituted from the alias into the |
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75 definition. |
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76 |
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77 For example, |
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78 |
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79 :: |
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80 |
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81 [revsetalias] |
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82 h = heads() |
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83 d(s) = sort(s, date) |
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84 rs(s, k) = reverse(sort(s, k)) |
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85 |
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86 defines three aliases, ``h``, ``d``, and ``rs``. ``rs(0:tip, author)`` is |
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87 exactly equivalent to ``reverse(sort(0:tip, author))``. |
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88 |
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89 An infix operator ``##`` can concatenate strings and identifiers into |
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90 one string. For example:: |
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91 |
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92 [revsetalias] |
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93 issue(a1) = grep(r'\bissue[ :]?' ## a1 ## r'\b|\bbug\(' ## a1 ## r'\)') |
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94 |
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95 ``issue(1234)`` is equivalent to ``grep(r'\bissue[ :]?1234\b|\bbug\(1234\)')`` |
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96 in this case. This matches against all of "issue 1234", "issue:1234", |
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97 "issue1234" and "bug(1234)". |
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98 |
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99 All other prefix, infix and postfix operators have lower priority than |
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100 ``##``. For example, ``a1 ## a2~2`` is equivalent to ``(a1 ## a2)~2``. |
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101 |
11382 | 102 Command line equivalents for :hg:`log`:: |
103 | |
104 -f -> ::. | |
105 -d x -> date(x) | |
106 -k x -> keyword(x) | |
107 -m -> merge() | |
108 -u x -> user(x) | |
109 -b x -> branch(x) | |
110 -P x -> !::x | |
111 -l x -> limit(expr, x) | |
112 | |
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113 Some sample queries: |
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114 |
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115 - Changesets on the default branch:: |
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116 |
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117 hg log -r "branch(default)" |
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118 |
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119 - Changesets on the default branch since tag 1.5 (excluding merges):: |
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120 |
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121 hg log -r "branch(default) and 1.5:: and not merge()" |
11382 | 122 |
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123 - Open branch heads:: |
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124 |
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125 hg log -r "head() and not closed()" |
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126 |
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127 - Changesets between tags 1.3 and 1.5 mentioning "bug" that affect |
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128 ``hgext/*``:: |
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129 |
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130 hg log -r "1.3::1.5 and keyword(bug) and file('hgext/*')" |
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131 |
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132 - Changesets committed in May 2008, sorted by user:: |
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133 |
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134 hg log -r "sort(date('May 2008'), user)" |
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135 |
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136 - Changesets mentioning "bug" or "issue" that are not in a tagged |
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137 release:: |
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138 |
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139 hg log -r "(keyword(bug) or keyword(issue)) and not ancestors(tag())" |