add find function

sfm

@@ -894,7 +894,7 @@ do_help() {
     bw=$((COLS - 4))
     [ "$bw" -gt 52 ] && bw=52
     [ "$bw" -lt 36 ] && bw=36
-    bh=45
+    bh=46
     _help_bx=$(( (COLS - bw) / 2 )); [ "$_help_bx" -lt 1 ] && _help_bx=1
     _help_by=$(( (ROWS - bh) / 2 )); [ "$_help_by" -lt 1 ] && _help_by=1
     _help_iw=$((bw - 2))
@@ -941,11 +941,12 @@ do_help() {
     help_row 36 "  ~   go to home directory"
     help_row 37 "  \`   jump to previous directory"
     help_row 38 "  :   jump to path"
-    help_sep 39
+    help_row 39 "  f   find files recursively"
-    help_row 40 "  q   quit"
+    help_sep 40
-    help_row 41 "  ?   this help"
+    help_row 41 "  q   quit"
-    help_row 42 ""
+    help_row 42 "  ?   this help"
-    help_row 43 "  press any key to close..."
+    help_row 43 ""
+    help_row 44 "  press any key to close..."
 
     goto "$(( _help_by + bh ))" "$_help_bx"
     printf '%s+%s+%s' "${BOLD}${CYAN}" "$_help_hl" "${RESET}"
@@ -1026,6 +1027,118 @@ do_toggle_preview() {
     NEED_FULL_REDRAW=1
 }
 
+do_find() {
+    goto "$(term_rows)" 1
+    printf '%s%s find (recursive): %s' "${ERASE_LINE}" "${CYAN}${BOLD}" "${RESET}"
+    if ! read_line || [ -z "$READ_LINE" ]; then
+        NEED_FULL_REDRAW=1; draw; return
+    fi
+    _query="$READ_LINE"
+
+    # run find and collect results into a tmp file
+    _tmp=/tmp/_sfm_find
+    find "$CWD" -name "*${_query}*" 2>/dev/null | sort > "$_tmp"
+    _total=$(wc -l < "$_tmp" | tr -d '[:space:]')
+
+    if [ "$_total" -eq 0 ]; then
+        INFO_MSG="no results for: ${_query}"
+        NEED_FULL_REDRAW=1; return
+    fi
+
+    # show results in an interactive picker
+    ROWS=$(term_rows); COLS=$(term_cols)
+    _pw=$(( COLS - 4 )); [ "$_pw" -gt 80 ] && _pw=80; [ "$_pw" -lt 30 ] && _pw=30
+    _ph=$(( ROWS - 4 )); [ "$_ph" -lt 5 ] && _ph=5
+    _px=$(( (COLS - _pw) / 2 )); [ "$_px" -lt 1 ] && _px=1
+    _py=$(( (ROWS - _ph) / 2 )); [ "$_py" -lt 1 ] && _py=1
+    _iw=$((_pw - 2))
+    _hl=$(printf '%*s' "$_iw" '' | tr ' ' '-')
+    _vis=$((_ph - 3))   # visible result rows
+
+    _fsel=1
+    _foff=1   # scroll offset (1-based)
+
+    while true; do
+        # draw box
+        goto "$_py" "$_px"
+        printf '%s+%s+%s' "${BOLD}${CYAN}" "$_hl" "${RESET}"
+
+        # title
+        goto "$((_py+1))" "$_px"
+        _title="  find: ${_query}  (${_total} results)"
+        [ "${#_title}" -gt "$_iw" ] && _title=$(printf '%s' "$_title" | cut -c1-"$_iw")
+        _tpl=$((_iw - ${#_title})); _tp=$(printf '%*s' "$_tpl" '')
+        printf '%s|%s%s%s%s|%s' "${BOLD}${CYAN}" "${RESET}" "$_title" "$_tp" "${BOLD}${CYAN}" "${RESET}"
+
+        goto "$((_py+2))" "$_px"
+        printf '%s|%s|%s' "${BOLD}${CYAN}" "$_hl" "${RESET}"
+
+        # results
+        _ri=0
+        while [ "$_ri" -lt "$_vis" ]; do
+            _ridx=$((_foff + _ri))
+            goto "$((_py+3+_ri))" "$_px"
+            if [ "$_ridx" -le "$_total" ]; then
+                _rline=$(awk -v n="$_ridx" 'NR==n{print;exit}' "$_tmp")
+                # strip CWD prefix for display
+                _rdisplay="${_rline#$CWD/}"
+                [ "${#_rdisplay}" -gt "$_iw" ] && \
+                    _rdisplay="...$(printf '%s' "$_rdisplay" | rev | cut -c1-$((_iw-4)) | rev)"
+                _rpl=$((_iw - ${#_rdisplay})); _rp=$(printf '%*s' "$_rpl" '')
+                if [ "$_ridx" -eq "$_fsel" ]; then
+                    printf '%s|%s%s%s%s|%s' "${BOLD}${CYAN}" "${REV}${YELLOW}" "$_rdisplay" "$_rp" "${RESET}${BOLD}${CYAN}" "${RESET}"
+                else
+                    printf '%s|%s%s%s%s|%s' "${BOLD}${CYAN}" "${RESET}" "$_rdisplay" "$_rp" "${BOLD}${CYAN}" "${RESET}"
+                fi
+            else
+                _ep=$(printf '%*s' "$_iw" '')
+                printf '%s|%s|%s' "${BOLD}${CYAN}" "$_ep" "${RESET}"
+            fi
+            _ri=$((_ri+1))
+        done
+
+        goto "$((_py+_ph))" "$_px"
+        printf '%s+%s+%s' "${BOLD}${CYAN}" "$_hl" "${RESET}"
+
+        # read key
+        IFS= read -r -n1 _fk 2>/dev/null || IFS= read -r _fk
+        case "$_fk" in
+            j) _fsel=$((_fsel+1)); [ "$_fsel" -gt "$_total" ] && _fsel=$_total
+               [ "$_fsel" -ge $((_foff+_vis)) ] && _foff=$((_foff+1)) ;;
+            k) _fsel=$((_fsel-1)); [ "$_fsel" -lt 1 ] && _fsel=1
+               [ "$_fsel" -lt "$_foff" ] && _foff=$((_foff-1)); [ "$_foff" -lt 1 ] && _foff=1 ;;
+            "$(printf '\033')")
+                IFS= read -r -n2 -t 0.1 _fseq 2>/dev/null || _fseq=""
+                case "$_fseq" in
+                    '[A') _fsel=$((_fsel-1)); [ "$_fsel" -lt 1 ] && _fsel=1
+                          [ "$_fsel" -lt "$_foff" ] && _foff=$((_foff-1)); [ "$_foff" -lt 1 ] && _foff=1 ;;
+                    '[B') _fsel=$((_fsel+1)); [ "$_fsel" -gt "$_total" ] && _fsel=$_total
+                          [ "$_fsel" -ge $((_foff+_vis)) ] && _foff=$((_foff+1)) ;;
+                    *) NEED_FULL_REDRAW=1; return ;;  # esc — close
+                esac ;;
+            "$(printf '\n')"|\
+            "$(printf '\r')"|\
+            l)
+                _chosen=$(awk -v n="$_fsel" 'NR==n{print;exit}' "$_tmp")
+                if [ -d "$_chosen" ]; then
+                    PREV_CWD="$CWD"; CWD="$_chosen"; norm_cwd
+                elif [ -e "$_chosen" ]; then
+                    PREV_CWD="$CWD"; CWD=$(dirname "$_chosen"); norm_cwd
+                fi
+                FILTER=""; SELECTED=""
+                SEL=0; OFFSET=0; PREV_SEL=0; PREV_OFFSET=0
+                load_entries
+                # try to highlight the found file
+                _fname="${_chosen##*/}"
+                [ -d "$_chosen" ] && _fname="${_fname}/"
+                _fidx=$(find_entry "$_fname")
+                [ "$_fidx" -ge 0 ] 2>/dev/null && SEL=$_fidx
+                return ;;
+            q|Q|h) NEED_FULL_REDRAW=1; return ;;
+        esac
+    done
+}
+
 do_jump_path() {
     goto "$(term_rows)" 1
     printf '%s%s jump to: %s' "${ERASE_LINE}" "${CYAN}${BOLD}" "${RESET}"
@@ -1582,6 +1695,7 @@ while true; do
         s)   do_sort          ;;
         u)   do_trash        ;;
         U)   do_open_trash   ;;
+        f)   do_find        ;;
         ':') do_jump_path   ;;
         '~') PREV_CWD="$CWD"; CWD=$(cd "$HOME" && pwd); FILTER=""; SELECTED=""
              SEL=0; OFFSET=0; PREV_SEL=0; PREV_OFFSET=0; load_entries ;;