Thomas RastUse Term::ReadKey, if available, to let the user answer add -p's prompts by pressing a single key. The 'g' command is the only one that takes an argument, but can easily cope since it'll just offer a choice of chunks. We're not doing the same in the main 'add -i' interface because file selection etc. may expect several characters.
Signed-off-by: Thomas Rast <trast@student.ethz.ch> ---
I wrote this on the train today, but it turns out a similar idea was already around earlier:
http://thread.gmane.org/gmane.comp.version-control.git/100146
I can't find the v4 promised there, so I assume Suraj dropped it.
It would indeed be nice if we could apply the same to the main 'add -i' loop, and I played with the code to do so for a while. Most of the mechanisms required seem to be in place; it already computes shortest unique prefixes for the inputs given, so we could just grab the one-character prefixes from there.
However, what to do when the user entered a letter that is known to be part of several prefixes? If we offer to enter the rest of the line, e.g., 'return $key.<STDIN>', the user can't backspace away the "existing" input if he decides to do something else instead. Perhaps readline could prime the input line with the letter, but I can't find any such feature in the Term::ReadLine docs. Implementation ideas are obviously very welcome.
git-add--interactive.perl | 35 ++++++++++++++++++++++++++++++++--- 1 files changed, 32 insertions(+), 3 deletions(-)
Show changes to git-add--interactive.perl +32 −3
diff --git a/git-add--interactive.perl b/git-add--interactive.perl index ca60356..0633eca 100755 --- a/git-add--interactive.perl +++ b/git-add--interactive.perl @@ -33,6 +33,14 @@ my ($diff_new_color) = my $normal_color = $repo->get_color("", "reset"); +my $use_readkey = 0; +my %control_keys; +eval { + use Term::ReadKey; + $use_readkey = 1; + %control_keys = GetControlChars; +}; + sub colored { my $color = shift; my $string = join("", @_); @@ -758,11 +766,32 @@ sub diff_applies { return close $fh; } +sub _restore_terminal_and_die { + ReadMode 'restore'; + print "\n"; + exit 1; +} + +sub prompt_single_character { + if ($use_readkey) { + local $SIG{TERM} = \&_restore_terminal_and_die; + local $SIG{INT} = \&_restore_terminal_and_die; + ReadMode 'cbreak'; + my $key = ReadKey 0; + ReadMode 'restore'; + print "$key" if defined $key; + print "\n"; + return $key; + } else { + return <STDIN>; + } +} + sub prompt_yesno { my ($prompt) = @_; while (1) { print colored $prompt_color, $prompt; - my $line = <STDIN>; + my $line = prompt_single_character; return 0 if $line =~ /^n/i; return 1 if $line =~ /^y/i; } @@ -892,7 +921,7 @@ sub patch_update_file { print @{$mode->{DISPLAY}}; print colored $prompt_color, "Stage mode change [y/n/a/d/?]? "; - my $line = <STDIN>; + my $line = prompt_single_character; if ($line =~ /^y/i) { $mode->{USE} = 1; last; @@ -965,7 +994,7 @@ sub patch_update_file { print; } print colored $prompt_color, "Stage this hunk [y/n/a/d$other/?]? "; - my $line = <STDIN>; + my $line = prompt_single_character; if ($line) { if ($line =~ /^y/i) { $hunk[$ix]{USE} = 1;
-- tg: (a34a9db..) t/add-p-readkey (depends on: origin/master)
