git-svn reads usernames and other user queries from an interactive
terminal. This cause GUIs (w/o STDIN connected) to hang waiting forever
for git-svn to complete 
(http://code.google.com/p/tortoisegit/issues/detail?id=967).

This change extends the Git::prompt helper, so that it can also be used
for non password queries, and makes use of it instead of using
hand-rolled prompt-response code that only works with the interactive
terminal.

Signed-off-by: Sven Strickroth <em...@cs-ware.de>
---
 perl/Git.pm            | 28 +++++++++++++++++-----------
 perl/Git/SVN/Prompt.pm | 16 +++++++---------
 2 files changed, 24 insertions(+), 20 deletions(-)

diff --git a/perl/Git.pm b/perl/Git.pm
index 0a0fe91..3200f4d 100644
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -511,18 +511,19 @@ C<git --html-path>). Useful mostly only internally.
 
 sub html_path { command_oneline('--html-path') }
 
-=item prompt ( PROMPT )
+=item prompt ( PROMPT , ISPASSWORD  )
 
 Query user C<PROMPT> and return answer from user.
 
 Honours GIT_ASKPASS, SSH_ASKPASS environment variables for querying
 the user. If no *_ASKPASS variable is set or an error occoured,
 the terminal is tried as a fallback.
+If C<ISPASSWORD> is set and true, the terminal disables echo.
 
 =cut
 
 sub prompt {
-       my ($prompt) = @_;
+       my ($prompt, $isPassword) = @_;
        my $ret;
        if (exists $ENV{'GIT_ASKPASS'}) {
                $ret = _prompt($ENV{'GIT_ASKPASS'}, $prompt);
@@ -533,16 +534,20 @@ sub prompt {
        if (!defined $ret) {
                print STDERR $prompt;
                STDERR->flush;
-               require Term::ReadKey;
-               Term::ReadKey::ReadMode('noecho');
-               $ret = '';
-               while (defined(my $key = Term::ReadKey::ReadKey(0))) {
-                       last if $key =~ /[\012\015]/; # \n\r
-                       $ret .= $key;
+               if (defined $isPassword && $isPassword) {
+                       require Term::ReadKey;
+                       Term::ReadKey::ReadMode('noecho');
+                       $ret = '';
+                       while (defined(my $key = Term::ReadKey::ReadKey(0))) {
+                               last if $key =~ /[\012\015]/; # \n\r
+                               $ret .= $key;
+                       }
+                       Term::ReadKey::ReadMode('restore');
+                       print STDERR "\n";
+                       STDERR->flush;
+               } else {
+                       chomp($ret = <STDIN>);
                }
-               Term::ReadKey::ReadMode('restore');
-               print STDERR "\n";
-               STDERR->flush;
        }
        return $ret;
 }
@@ -550,6 +555,7 @@ sub prompt {
 sub _prompt {
        my ($askpass, $prompt) = @_;
        return unless length $askpass;
+       $prompt =~ s/\n/ /g;
        my $ret;
        open my $fh, "-|", $askpass, $prompt or return;
        $ret = <$fh>;
diff --git a/perl/Git/SVN/Prompt.pm b/perl/Git/SVN/Prompt.pm
index a2cbcc8..74daa7a 100644
--- a/perl/Git/SVN/Prompt.pm
+++ b/perl/Git/SVN/Prompt.pm
@@ -62,16 +62,16 @@ sub ssl_server_trust {
                                       issuer_dname fingerprint);
        my $choice;
 prompt:
-       print STDERR $may_save ?
+       my $options = $may_save ?
              "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
              "(R)eject or accept (t)emporarily? ";
        STDERR->flush;
-       $choice = lc(substr(<STDIN> || 'R', 0, 1));
-       if ($choice =~ /^t$/i) {
+       $choice = lc(substr(Git::prompt("Certificate problem.\n" . $options) || 
'R', 0, 1));
+       if ($choice eq 't') {
                $cred->may_save(undef);
-       } elsif ($choice =~ /^r$/i) {
+       } elsif ($choice eq 'r') {
                return -1;
-       } elsif ($may_save && $choice =~ /^p$/i) {
+       } elsif ($may_save && $choice eq 'p') {
                $cred->may_save($may_save);
        } else {
                goto prompt;
@@ -109,9 +109,7 @@ sub username {
        if (defined $_username) {
                $username = $_username;
        } else {
-               print STDERR "Username: ";
-               STDERR->flush;
-               chomp($username = <STDIN>);
+               $username = Git::prompt("Username: ");
        }
        $cred->username($username);
        $cred->may_save($may_save);
@@ -120,7 +118,7 @@ sub username {
 
 sub _read_password {
        my ($prompt, $realm) = @_;
-       my $password = Git::prompt($prompt);
+       my $password = Git::prompt($prompt, 1);
        $password;
 }
 
-- 
Best regards,
 Sven Strickroth
 PGP key id F5A9D4C4 @ any key-server
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