annotate contrib/editmergeps.ps1 @ 39690:e0c5017124b3

localrepo: load extensions in makelocalrepository()

Behavior does change subtly.

First, we now load the hgrc before optionally setting up the vfs ward.
That's fine: the vfs ward is for debugging and we know we won't hit it
when reading .hg/hgrc. If the loaded extension were performing repo/vfs
I/O, then we'd be worried. But extensions don't have access to the
repo object that loaded them when they are loaded. Unless they are
doing stack walking as part of module loading (which would be crazy),
they shouldn't have access to the repo that incurred their load.

Second, we now load extensions outside of the try..except IOError
block. Previously, if loading an extension raised IOError, it would
be silently ignored. I'm pretty sure the IOError is there for missing
.hgrc files and should never have been ignored for issues loading
extensions. I don't think this matters in reality because extension
loading traps I/O errors.

Differential Revision: https://phab.mercurial-scm.org/D4566

# A simple script for opening merge conflicts in editor
# A loose translation of contrib/editmerge to powershell
# Please make sure that both editmergeps.bat and editmerge.ps1 are available
# via %PATH% and use the following Mercurial settings to enable it
#
# [ui]
# editmergeps
# editmergeps.args=$output
# editmergeps.check=changed
# editmergeps.premerge=keep

$file=$args[0]

function Get-Lines
{
  Select-String "^<<<<<<" $file | % {"$($_.LineNumber)"}
}

$ed = $Env:HGEDITOR;
if ($ed -eq $nil)
{
  $ed = $Env:VISUAL;
}
if ($ed -eq $nil)
{
  $ed = $Env:EDITOR;
}
if ($ed -eq $nil)
{
  $ed = $(hg showconfig ui.editor);
}
if ($ed -eq $nil)
{
  Write-Error "merge failed - unable to find editor"
  exit 1
}

if (($ed -eq "vim") -or ($ed -eq "emacs") -or `
    ($ed -eq "nano") -or ($ed -eq "notepad++"))
{
  $lines = Get-Lines
  $firstline = if ($lines.Length -gt 0) { $lines[0] } else { $nil }
  $previousline = $nil;


  # open the editor to the first conflict until there are no more
  # or the user stops editing the file
  while (($firstline -ne $nil) -and ($firstline -ne $previousline))
  {
    if ($ed -eq "notepad++")
    {
        $linearg = "-n$firstline"
    }
    else
    {
        $linearg = "+$firstline"
    }

    Start-Process -Wait -NoNewWindow $ed $linearg,$file
    $previousline = $firstline
    $lines = Get-Lines
    $firstline = if ($lines.Length -gt 0) { $lines[0] } else { $nil }
  }
}
else
{
  & "$ed" $file
}

$conflicts=Get-Lines
if ($conflicts.Length -ne 0)
{
  Write-Output "merge failed - resolve the conflicts (line $conflicts) then use 'hg resolve --mark'"
  exit 1
}

exit 0