[PATCH (GIT-GUI) v2 2/5] git-gui: Fix the after callback execution in rescan.
From: Alexander Gavrilov <hidden>
Date: 2016-06-15 22:45:39
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
The rescan function receives a callback command as its parameter, which is supposed to be executed after the scan finishes. It is generally used to update status. However, rescan may initiate a loading of a diff, which always calls ui_ready after completion. If the after handler is called before that, ui_ready will override the new status. This commit ensures that the after callback is properly threaded through the diff machinery. Since it uncovered the fact that force_first_diff actually didn't work due to an undeclared global variable, and the desired effects appeared only because of the race condition between the diff system and the rescan callback, I also reimplement this function to make it behave as originally intended. Signed-off-by: Alexander Gavrilov <redacted> --- git-gui.sh | 41 ++++++++++++++++++++++++++++------------- lib/diff.tcl | 6 +++--- 2 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/git-gui.sh b/git-gui.sh
index 34214b6..2709f6e 100755
--- a/git-gui.sh
+++ b/git-gui.sh@@ -1469,10 +1469,8 @@ proc rescan_done {fd buf after} { prune_selection unlock_index display_all_files - if {$current_diff_path ne {}} reshow_diff - if {$current_diff_path eq {}} select_first_diff - - uplevel #0 $after + if {$current_diff_path ne {}} { reshow_diff $after } + if {$current_diff_path eq {}} { select_first_diff $after } } proc prune_selection {} {
@@ -1984,16 +1982,16 @@ proc do_rescan {} { } proc ui_do_rescan {} { - rescan {force_first_diff; ui_ready} + rescan {force_first_diff ui_ready} } proc do_commit {} { commit_tree } -proc next_diff {} { +proc next_diff {{after {}}} { global next_diff_p next_diff_w next_diff_i - show_diff $next_diff_p $next_diff_w {} + show_diff $next_diff_p $next_diff_w {} {} $after } proc find_anchor_pos {lst name} {
@@ -2078,25 +2076,42 @@ proc next_diff_after_action {w path {lno {}} {mmask {}}} { } } -proc select_first_diff {} { +proc select_first_diff {after} { global ui_workdir if {[find_next_diff $ui_workdir {} 1 {^_?U}] || [find_next_diff $ui_workdir {} 1 {[^O]$}]} { - next_diff + next_diff $after + } else { + uplevel #0 $after } } -proc force_first_diff {} { - global current_diff_path +proc force_first_diff {after} { + global ui_workdir current_diff_path file_states if {[info exists file_states($current_diff_path)]} { set state [lindex $file_states($current_diff_path) 0] + } else { + set state {OO} + } - if {[string index $state 1] ne {O}} return + set reselect 0 + if {[string first {U} $state] >= 0} { + # Already a conflict, do nothing + } elseif {[find_next_diff $ui_workdir $current_diff_path {} {^_?U}]} { + set reselect 1 + } elseif {[string index $state 1] ne {O}} { + # Already a diff & no conflicts, do nothing + } elseif {[find_next_diff $ui_workdir $current_diff_path {} {[^O]$}]} { + set reselect 1 } - select_first_diff + if {$reselect} { + next_diff $after + } else { + uplevel #0 $after + } } proc toggle_or_diff {w x y} {
diff --git a/lib/diff.tcl b/lib/diff.tcl
index 94ee38c..bbbf15c 100644
--- a/lib/diff.tcl
+++ b/lib/diff.tcl@@ -16,7 +16,7 @@ proc clear_diff {} { $ui_workdir tag remove in_diff 0.0 end } -proc reshow_diff {} { +proc reshow_diff {{after {}}} { global file_states file_lists global current_diff_path current_diff_side global ui_diff
@@ -30,13 +30,13 @@ proc reshow_diff {} { || [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} { if {[find_next_diff $current_diff_side $p {} {[^O]}]} { - next_diff + next_diff $after } else { clear_diff } } else { set save_pos [lindex [$ui_diff yview] 0] - show_diff $p $current_diff_side {} $save_pos + show_diff $p $current_diff_side {} $save_pos $after } }
--
1.6.0.3.15.gb8d36