git-patch.exp

#!/usr/bin/expect -f

# Set timeout to prevent the script from hanging
set timeout -1

# Get the search pattern as a command line argument
if {[llength $argv] != 0} {
   set pattern [lindex $argv 0]
} else {
   puts "Error: search pattern not provided"
   exit 1
}

# Open the interaction with git add -p
spawn git add -p

# This is the main loop that handles the user interaction
expect {
  # This expect block is for the hunk that contains the provided pattern
  "*$pattern*Stage this hunk*" {
    send "y\r"
    exp_continue
  }
  # This expect block is for continuing to the next hunk
  "*Stage this hunk*" {
    send "n\r"
    exp_continue
  }
  eof
}