config/git: fix sysyadm & add diffa

.config/shell/git

@@ -13,11 +13,17 @@ yc() {
 }
 
 alias sysyadm="yadm --yadm-dir /etc/yadm --yadm-data /etc/yadm"
-alias sysinit="sysyadm init -b main -w /; sysyadm gitconfig include.path '$XDG_CONFIG_HOME/git/config'"
+alias sysinit="sysyadm init -b main -w /" #; sysyadm gitconfig include.path '$XDG_CONFIG_HOME/git/config'"
 sy() {
   unignore="/etc/yadm/unignore"
   test -r "$unignore" && cat "$unignore" | envsubst | sysyadm add --intent-to-add --pathspec-from-file=-
-  test "$#" -eq 0 && sysyadm s || sysyadm "$@"
+  case "$1" in
+    ("") sysyadm s;;
+    (p) sysyadm p;;
+    (l) sysyadm fetch && sy rebase main --onto origin/main;;
+    (*) sudo -E $(alias sysyadm | cut -d\' -f2) "$@";;
+  esac
+  sudo chown -R $USER /etc/yadm
 }
 
 gcn() {

.local/bin/scripts/git-diffa

@@ -0,0 +1,3 @@
+#!/bin/sh
+# Diff given files against all branches
+git for-each-ref --format='%(refname:short)' | while read branch; do { highlight $branch && git diff --color=always $branch..HEAD "$@"; }; done | less

.local/bin/scripts/git-origin

@@ -1,9 +1,11 @@
 #!/bin/sh -e
 # set repo as origin and set all branches upstream to a corresponding remote branch, if available
-git remote remove origin 2>/dev/null
+git remote $(case "$(git remote)" in
-git remote add origin $(git-repo "$@")
+  (*origin*) echo set-url;;
+  (*) echo add;;
+esac) origin "$(git-repo "$@")"
 git remote -v && git fetch
 
-git branch | sed 's/ //g' | sed 's/*//' | while read branch
+git branch --format='%(refname:short)' | while read branch
 do test $(git branch -a | grep origin/$branch | wc -l) -gt 0 && git branch -u origin/$branch $branch
 done

.local/bin/scripts/git-week

@@ -1,4 +1,4 @@
 #!/bin/sh
 # Commits by myself throughout the current week
-# Depends on git-my alias listing commits by myself
+# depends: git-my alias - listing own commits
 git my --after "$(date -d "Mon ${1:-1} weeks ago")" --before "$(date -d "Mon $(expr ${1:-1} - 1) weeks ago")" "${@:2}"