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rc git: hide blame and report error if git blame fails

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Similar to the previous patch, when git blame fails it usually means
that the blamed file is not tracked by Git. I don't know of other
common failure scenarios.

Since git blame runs in detached process, failure handling is a bit
more involved.  Let's forward stderr to the debug buffer and escalate
the error. I'm not sure how to get the exit code from git blame in
"git blame | perl" - we can't use $PIPESTATUS.
As a workaround, interpret empty output as failure.

In case of failure, also hide blame; this makes the UI more consistent
I think.
This commit is contained in:
Johannes Altmanninger 2024-02-25 17:51:13 +01:00 committed by Maxime Coste
parent 03bea7ced4
commit 8a7641284c
1 changed files with 22 additions and 4 deletions
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26
rc/tools/git.kak
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@ -289,7 +289,7 @@ define-command -params 1.. \
set-option buffer=$kak_bufname git_blame_index '$kak_timestamp'
set-option buffer=$kak_bufname git_blame ''
}" | kak -p ${kak_session}
git blame --incremental "$@" <${contents_fifo} | perl -wne '
if ! stderr=$({ git blame --incremental "$@" <${contents_fifo} | perl -wne '
use POSIX qw(strftime);
sub quote {
my $SQ = "'\''";
@ -298,8 +298,11 @@ define-command -params 1.. \
return "$SQ$token$SQ";
}
sub send_flags {
my $flush = shift;
if (not defined $line) { return; }
my $is_last_call = shift;
if (not defined $line) {
if ($is_last_call) { exit 1; }
return;
}
my $text = substr($sha,0,7) . " " . $dates{$sha} . " " . $authors{$sha};
$text =~ s/~/~~/g;
for ( my $i = 0; $i < $count; $i++ ) {
@ -307,7 +310,7 @@ define-command -params 1.. \
}
$now = time();
# Send roughly one update per second, to avoid creating too many kak processes.
if (!$flush && defined $last_sent && $now - $last_sent < 1) {
if (!$is_last_call && defined $last_sent && $now - $last_sent < 1) {
return
}
open CMD, "|-", "kak -p $ENV{kak_session}";
@ -337,6 +340,21 @@ define-command -params 1.. \
}
if (m/^author-time ([0-9]*)/) { $dates{$sha} = strftime("%F %T", localtime $1) }
END { send_flags(1); }'
} 2>&1); then
escape2() { printf %s "$*" | sed "s/'/''''/g"; }
echo "evaluate-commands -client ${kak_client} '
evaluate-commands -draft %{
buffer %{${kak_buffile}}
git hide-blame
}
echo -debug failed to run git blame
echo -debug git stderr: <<<
echo -debug ''$(escape2 "$stderr")>>>''
hook -once buffer NormalIdle .* %{
echo -markup %{{Error}failed to run git blame, see *debug* buffer}
}
'" | kak -p ${kak_session}
fi
if [ "$contents_fifo" != /dev/null ]; then
rm -r $(dirname $contents_fifo)
fi