[RFC PATCH 4/4] track oid_size to allow for checks that are hash agnostic

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This allows commit to work.

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@xxxxxxxxx>
---
 git-gui.sh     | 5 +++--
 lib/commit.tcl | 3 ++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/git-gui.sh b/git-gui.sh
index c0dc8ce..1646124 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -1821,10 +1821,11 @@ proc short_path {path} {
 
 set next_icon_id 0
 if { [get_config extensions.objectformat] eq "sha256" } {
-	set null_oid [string repeat 0 64]
+	set oid_size 64
 } else {
-	set null_oid [string repeat 0 40]
+	set oid_size 40
 }
+set null_oid [string repeat 0 $oid_size]
 
 proc merge_state {path new_state {head_info {}} {index_info {}}} {
 	global file_states next_icon_id null_oid
diff --git a/lib/commit.tcl b/lib/commit.tcl
index 11379f8..1306e8d 100644
--- a/lib/commit.tcl
+++ b/lib/commit.tcl
@@ -337,6 +337,7 @@ proc commit_committree {fd_wt curHEAD msg_p} {
 	global file_states selected_paths rescan_active
 	global repo_config
 	global env
+	global oid_size
 
 	gets $fd_wt tree_id
 	if {[catch {close $fd_wt} err]} {
@@ -356,7 +357,7 @@ proc commit_committree {fd_wt curHEAD msg_p} {
 		close $fd_ot
 
 		if {[string equal -length 5 {tree } $old_tree]
-			&& [string length $old_tree] == 45} {
+			&& [string length $old_tree] == 5 + oid_size} {
 			set old_tree [string range $old_tree 5 end]
 		} else {
 			error [mc "Commit %s appears to be corrupt" $PARENT]
-- 
2.33.0.1081.g099423f5b7




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