Change download url to branch

Backport from 065ef47b2

README.md

@@ -1,3 +1,27 @@
+Do you use `git difftool` to review changes before making a commit? The problem with that is that you get to see the diff of one file at a time. You can't easily stop it after few files and you can't go back to a previous file. `vimtabdiff.py` loads all the files with diffs, one in each vim tab page. You can move around any file and edit the diffs easily.
+
+
+# Install
+
+```bash
+    mkdir -p ~/bin
+
+    # for python version >= 3.10
+    curl -o ~/bin/vimtabdiff.py "https://raw.githubusercontent.com/balki/vimtabdiff/master/vimtabdiff.py"
+
+    # for python version < 3.10
+    curl -o ~/bin/vimtabdiff.py "https://raw.githubusercontent.com/balki/vimtabdiff/br-py38/vimtabdiff.py"
+
+    chmod +x ~/bin/vimtabdiff.py
+```
+
+You may need to add `~/bin` to your PATH variable if not already done. See [here](https://wiki.archlinux.org/title/Environment_variables#Per_user) for help.
+👍 this [issue](https://github.com/balki/vimtabdiff/issues/1) for `pip install` support 
+
+
+# Screenshot
+![image](https://user-images.githubusercontent.com/189196/206880555-c71b472c-144c-4c82-a4ab-f8a4fd36f7a5.png)
+
 # Usage
 ```help
     usage: vimtabdiff.py [-h] [--vim VIM] pathA pathB
@@ -34,6 +58,7 @@
 
 ## Using custom vim command
 
+Using clean vim without reading `vimrc`
 ```bash
     git config --global difftool.vimtabdiff.cmd 'vimtabdiff.py --vim "vim --clean" $LOCAL $REMOTE'
 ```
@@ -47,16 +72,14 @@ Git config file (`~/.gitconfig`) should look like this
     [difftool "vimtabdiff"]
             cmd = vimtabdiff.py --vim \"vim --clean\" $LOCAL $REMOTE
 ```
+Using better diff algorithm
 
+```bash
+    git config --global difftool.vimtabdiff.cmd 'vimtabdiff.py --vim "vim +\"set diffopt+=algorithm:patience\"" $LOCAL $REMOTE'
 
-# Known issues
+```
 
-  1. If your path to custom vim has space, it does not work. i.e. Following does *not* work
-
-      ```bash
-      git config --global difftool.vimtabdiff.cmd 'vimtabdiff.py --vim "/home/foo/my files/bin/vim" $LOCAL $REMOTE'
-      ```
-  2. Not tested in non-linux OS. Pull requests welcome if found any issues.
+*Note:* Not tested in non-linux OS. But I guess it should work fine. Pull requests welcome if found any issues.
 
 # Similar
 

vimtabdiff.py

@@ -6,7 +6,7 @@ import pathlib
 import itertools
 import tempfile
 import subprocess
-
+import shlex
 
 def star(f):
     """ see https://stackoverflow.com/q/21892989 """
@@ -15,7 +15,8 @@ def star(f):
 
 def parse_args():
     parser = argparse.ArgumentParser(
-        description="Show diff of files from two directories in vim tabs")
+        description="Show diff of files from two directories in vim tabs",
+        epilog="See https://github.com/balki/vimtabdiff for more info")
     parser.add_argument("pathA")
     parser.add_argument("pathB")
     parser.add_argument("--vim", help="vim command to run", default="vim")
@@ -67,18 +68,27 @@ def main():
     args = parse_args()
     vimCmdFile = tempfile.NamedTemporaryFile(mode='w', delete=False)
     with vimCmdFile:
+        cmds = f"""
+        let s:spr = &splitright
+        set splitright
+        """
+        print(cmds, file=vimCmdFile)
         for a, b in get_file_pairs(args.pathA, args.pathB):
             aPath = a.resolve() if a else os.devnull
             bPath = b.resolve() if b else os.devnull
             print(
-                f"tabedit {aPath} | diffthis | vsp {bPath} | diffthis | diffupdate",
+                f"tabedit {aPath} | vsp {bPath}",
                 file=vimCmdFile)
         cmds = f"""
+        let &splitright = s:spr
+        tabdo windo :1
+        tabdo windo diffthis
+        tabdo windo diffupdate
         tabfirst | tabclose
         call delete("{vimCmdFile.name}")
         """
         print(cmds, file=vimCmdFile)
-    subprocess.run(args.vim.split() + ["-S", vimCmdFile.name])
+    subprocess.run(shlex.split(args.vim) + ["-S", vimCmdFile.name])
 
 
 if __name__ == '__main__':