scripts/vim-patch.sh: massage args for git-log [ci skip] (#10888)

Replace "src/nvim/" => "src/".
Replace ".*/.vim-src/" => "".

This allows to use tab completion based on existing files in Neovim's
source, or via .vim-src.

Previously you would have to typically remove the "nvim/" part manually
yourself.

scripts/vim-patch.sh

@@ -394,6 +394,22 @@ list_missing_vimpatches() {
   done
 }
 
+# Prints a newline-delimited list of Vim commits, for use by scripts.
+# "$@" is passed to list_vim_commits, as extra arguments to git-log.
+list_missing_vimpatches() {
+  local token vim_commit vim_tag patch_number
+  declare -A tokens
+  declare -A vim_commit_tags
+  declare -a git_log_args
+
+  # Massage arguments for git-log.
+  declare -A git_log_replacements=(
+    [^\(.*/\)?src/nvim/\(.*\)]="\${BASH_REMATCH[1]}src/\${BASH_REMATCH[2]}"
+    [^\(.*/\)?\.vim-src/\(.*\)]="\${BASH_REMATCH[2]}"
+  )
+  for i in "$@"; do
+    for j in "${!git_log_replacements[@]}"; do
+      if [[ "$i" =~ $j ]]; then
         eval "git_log_args+=(${git_log_replacements[$j]})"
         continue 2
       fi
@@ -414,7 +430,7 @@ list_missing_vimpatches() {
       --shell)
   )"
   # Exit in case of errors from the above eval (empty vim_commit_tags).
-  if ! (( "${#vim_commit_tags[@]}" )); then
+  if ! (( "${#vim_commit_tags[@]}" )); then
     msg_err "Could not get Vim commits/tags."
     exit 1
   fi
@@ -436,6 +452,7 @@ list_missing_vimpatches() {
       fi
       echo "$vim_tag"
     else
+      echo "$vim_commit"
     fi
   done
 }