git: Make git diff termcolor aware

Added simple light/dark distinction for git diffs using delta.
Will use the TERM_DARK env variable which is set in the base
module functionality on opening a new term.

This means unfortunately git diffs will have the wrong color
when terms recently changed between light-dark but on opening
a new one the error is gone and it automatically adapts again
to the terminal background color.

git/.config/git/config

@@ -5,17 +5,17 @@
 [init]
   defaultBranch = main
 [core]
-  pager = delta
+  pager         = git delta
 [pager]
   difftool      = true
 [interactive]
-  diffFilter = delta --color-only
+  diffFilter    = git delta --color-only
 [merge]
   conflictstyle = diff3
 [delta]
-  navigate = true
-  line-numbers = true
-  syntax-theme = base16
+  navigate      = true
+  line-numbers  = true
+  syntax-theme  = base16
 [sendemail]
   smtpserver    = "/usr/bin/msmtp"
   annotate      = yes
@@ -27,6 +27,7 @@
   diffword      = "!git diff --word-diff=color --word-diff-regex='[0-9A-Za-z_]+'"  # word-wise diff, good for prose
   diffsyn       = "!git difftool --tool difftastic" # add syntax-driven diff using treesitter
   diffside      = "!DELTA_FEATURES='+side-by-side' git diff" # add side-by-side diffing
+  delta         = "![ $TERM_DARK=false ] && delta --light || delta" # Take care that we always display right color scheme
 [commit]
   gpgsign       = true                                                 # sign commits as me
   verbose       = true                                                 # Always show diff when preparing commit message

git/.config/sh/alias.d/git.sh

@@ -31,13 +31,11 @@ else
 fi
 alias gco='git checkout'
 
-alias gd='git diff'
-alias gdd='git diffword'
-alias gds='git diff --staged'
-alias gdds='git diffword --staged'
-
 alias gi='git ignore'
 
+# normal diff
+alias gd='git diff'
+alias gds='git diff --staged'
 # word-based diff (with custom word regex)
 alias gdw='git diffword'
 alias gdws='git diffword --staged'
@@ -49,12 +47,16 @@ if exist difft; then
     alias gdy='git diffsyn'
     alias gdys='git diffsyn --staged'
 fi
+alias gdd='git diffside'
+alias gdds='git diffside --staged'
 # show last committed content
 alias gdl='git last'
+
 # show quick log overview
 alias glg='git log --oneline --decorate --graph'
-alias glgd="git log --graph --pretty=format:'%C(auto)%h%Creset %C(cyan)%ar%Creset%C(auto)%d%Creset %s'"
 alias glga='git log --oneline --decorate --graph --remotes --all'
+# show quick log overview - with dates
+alias glgd="git log --graph --pretty=format:'%C(auto)%h%Creset %C(cyan)%ar%Creset%C(auto)%d%Creset %s'"
 alias glgad="git log --graph --remotes --all --pretty=format:'%C(auto)%h%Creset %C(cyan)%ar%Creset%C(auto)%d%Creset %s'"
 # show detailed log overview
 alias glog='git log --stat'