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0c065c08fa
I found that typical case is that grep target is added at (*) revision
in the tree shown below.
+--- 1(*) --- 3
0
+--- 2 ------ 4
Now, I expect 'hg grep --all' to show only rev:1 which is first
appearance of target line.
But 'hg grep --all' will tell:
target line dis-appeared at 3 => 4
target line appeared at 2 => 3
target line dis-appeared at 1 => 2
target line appeared at 0 => 1
because current 'hg grep' implementation compares not between target
revision and its parent, but between neighbor revisions in walkthrough
order.
I checked performance of this patch by "hg grep --follow --all
walkchangerevs" on whole Mercurial repo, and patched version could
complete as fast as un-patched one.
51 lines
1.1 KiB
Plaintext
51 lines
1.1 KiB
Plaintext
% pattern error
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grep: invalid match pattern: nothing to repeat
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% simple
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port:4:export
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port:4:vaportight
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port:4:import/export
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% all
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port:4:4:-:spam:import/export
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port:3:4:+:eggs:import/export
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port:2:1:-:spam:import
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port:2:2:-:spam:export
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port:2:1:+:spam:export
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port:2:2:+:spam:vaportight
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port:2:3:+:spam:import/export
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port:1:2:+:eggs:export
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port:0:1:+:spam:import
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% other
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port:4:import/export
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% follow
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port:0:import
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port2:6:4:+:eggs:deport
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port:4:4:-:spam:import/export
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port:3:4:+:eggs:import/export
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port:2:1:-:spam:import
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port:2:2:-:spam:export
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port:2:1:+:spam:export
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port:2:2:+:spam:vaportight
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port:2:3:+:spam:import/export
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port:1:2:+:eggs:export
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port:0:1:+:spam:import
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color:3:orange
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color:3:+:orange
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color:2:-:orange
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color:1:+:orange
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% match in last line without newline
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adding noeol
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% last character omitted in output to avoid infinite loop
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noeol:4:no infinite loo
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% issue 685
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adding color
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colour:1:octarine
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color:0:octarine
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colour:1:octarine
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% issue 337
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adding color
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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created new head
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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color:3:-:red
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color:1:+:red
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