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feat(cli): preserve user input on multiline paste #3065

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Merged
teknium1 merged 1 commit into from
Mar 25, 2026
Merged

feat(cli): preserve user input on multiline paste #3065

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73 changes: 56 additions & 17 deletions cli.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6472,12 +6472,31 @@ def handle_paste(event):
When the terminal supports bracketed paste, Ctrl+V / Cmd+V
triggers this with the pasted text. We also check the
clipboard for an image on every paste event.

Large pastes (5+ lines) are collapsed to a file reference
placeholder while preserving any existing user text in the
buffer.
"""
pasted_text = event.data or ""
if self._try_attach_clipboard_image():
event.app.invalidate()
if pasted_text:
event.current_buffer.insert_text(pasted_text)
line_count = pasted_text.count('\n')
buf = event.current_buffer
if line_count >= 5 and not buf.text.strip().startswith('/'):
_paste_counter[0] += 1
paste_dir = _hermes_home / "pastes"
paste_dir.mkdir(parents=True, exist_ok=True)
paste_file = paste_dir / f"paste_{_paste_counter[0]}_{datetime.now().strftime('%H%M%S')}.txt"
paste_file.write_text(pasted_text, encoding="utf-8")
placeholder = f"[Pasted text #{_paste_counter[0]}: {line_count + 1} lines \u2192 {paste_file}]"
prefix = ""
if buf.cursor_position > 0 and buf.text[buf.cursor_position - 1] != '\n':
prefix = "\n"
_paste_just_collapsed[0] = True
buf.insert_text(prefix + placeholder)
else:
buf.insert_text(pasted_text)

@kb.add('c-v')
def handle_ctrl_v(event):
Expand Down Expand Up @@ -6590,15 +6609,25 @@ def _input_height():
# Paste collapsing: detect large pastes and save to temp file
_paste_counter = [0]
_prev_text_len = [0]
_paste_just_collapsed = [False]

def _on_text_changed(buf):
"""Detect large pastes and collapse them to a file reference."""
"""Detect large pastes and collapse them to a file reference.

When bracketed paste is available, handle_paste collapses
large pastes directly. This handler is a fallback for
terminals without bracketed paste support.
"""
text = buf.text
line_count = text.count('\n')
chars_added = len(text) - _prev_text_len[0]
_prev_text_len[0] = len(text)
if _paste_just_collapsed[0]:
_paste_just_collapsed[0] = False
return
line_count = text.count('\n')
# Heuristic: a real paste adds many characters at once (not just a
# single newline from Alt+Enter) AND the result has 5+ lines.
# Fallback for terminals without bracketed paste support.
if line_count >= 5 and chars_added > 1 and not text.startswith('/'):
_paste_counter[0] += 1
# Save to temp file
Expand All @@ -6607,7 +6636,7 @@ def _on_text_changed(buf):
paste_file = paste_dir / f"paste_{_paste_counter[0]}_{datetime.now().strftime('%H%M%S')}.txt"
paste_file.write_text(text, encoding="utf-8")
# Replace buffer with compact reference
buf.text = f"[Pasted text #{_paste_counter[0]}: {line_count + 1} lines → {paste_file}]"
buf.text = f"[Pasted text #{_paste_counter[0]}: {line_count + 1} lines \u2192 {paste_file}]"
buf.cursor_position = len(buf.text)

input_area.buffer.on_text_changed += _on_text_changed
Expand Down Expand Up @@ -7122,23 +7151,33 @@ def process_loop():

# Expand paste references back to full content
import re as _re
paste_match = _re.match(r'\[Pasted text #\d+: \d+ lines → (.+)\]', user_input) if isinstance(user_input, str) else None
if paste_match:
paste_path = Path(paste_match.group(1))
_paste_ref_re = _re.compile(r'\[Pasted text #\d+: \d+ lines \u2192 (.+?)\]')
paste_refs = list(_paste_ref_re.finditer(user_input)) if isinstance(user_input, str) else []
if paste_refs:
def _expand_ref(m):
p = Path(m.group(1))
return p.read_text(encoding="utf-8") if p.exists() else m.group(0)
expanded = _paste_ref_re.sub(_expand_ref, user_input)
total_lines = expanded.count('\n') + 1
n_pastes = len(paste_refs)
_user_bar = f"[{_accent_hex()}]{'─' * 40}[/]"
if paste_path.exists():
full_text = paste_path.read_text(encoding="utf-8")
line_count = full_text.count('\n') + 1
print()
ChatConsole().print(_user_bar)
print()
ChatConsole().print(_user_bar)
# Show any surrounding user text alongside the paste summary
split_parts = _paste_ref_re.split(user_input)
visible_user_text = " ".join(
split_parts[i].strip() for i in range(0, len(split_parts), 2) if split_parts[i].strip()
)
if visible_user_text:
ChatConsole().print(
f"[bold {_accent_hex()}]●[/] [bold]{_escape(f'[Pasted text: {line_count} lines]')}[/]"
f"[bold {_accent_hex()}]\u25cf[/] [bold]{_escape(visible_user_text)}[/] "
f"[dim]({n_pastes} pasted block{'s' if n_pastes > 1 else ''}, {total_lines} lines total)[/]"
)
user_input = full_text
else:
print()
ChatConsole().print(_user_bar)
ChatConsole().print(f"[bold {_accent_hex()}]●[/] [bold]{_escape(user_input)}[/]")
ChatConsole().print(
f"[bold {_accent_hex()}]\u25cf[/] [bold]{_escape(f'[Pasted text: {total_lines} lines]')}[/]"
)
user_input = expanded
else:
_user_bar = f"[{_accent_hex()}]{'─' * 40}[/]"
if '\n' in user_input:
Expand Down
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