Implemented visual line mode

docs/my_prompt.md

@@ -0,0 +1,92 @@
+## Prompt example
+
+This is the `shed` code for the prompt that I currently use. Note that the scripting language for `shed` is essentially identical to bash. This prompt code uses the `\!` escape sequence which lets you use the output of a function as your prompt.
+
+Also note that in `shed`, the `echo` builtin has a new `-p` flag which expands prompt escape sequences. This allows you to access these escape sequences in any context.
+
+```bash
+prompt_topline() {
+  local user_and_host="\e[0m\e[1m$USER\e[1;36m@\e[1;31m$HOST\e[0m"
+  echo -n "\e[1;34m┏━ $user_and_host\n"
+}
+
+prompt_stat_line() {
+  local last_exit_code="$?"
+  local last_cmd_status
+  local last_cmd_runtime
+  if [ "$last_exit_code" -eq "0" ]; then
+    last_cmd_status="\e[1;32m\e[0m"
+  else
+    last_cmd_status="\e[1;31m\e[0m"
+  fi
+  local last_runtime_raw="$(echo -p "\t")"
+  if [ -z "$last_runtime_raw" ]; then
+    return 0
+  else
+    last_cmd_runtime="\e[1;38;2;249;226;175m󰔛 $(echo -p "\T")\e[0m"
+  fi
+
+  echo -n "\e[1;34m┃ $last_cmd_runtime ($last_cmd_status)\n"
+}
+
+prompt_git_line() {
+  git rev-parse --is-inside-work-tree > /dev/null 2>&1 || return
+
+  local gitsigns
+  local status="$(git status --porcelain 2>/dev/null)"
+  local branch="$(git branch --show-current 2>/dev/null)"
+
+  [ -n "$status" ] && echo "$status" | command grep -q '^ [MADR]' && gitsigns="$gitsigns!"
+  [ -n "$status" ] && echo "$status" | command grep -q '^??' && gitsigns="$gitsigns?"
+  [ -n "$status" ] && echo "$status" | command grep -q '^[MADR]' && gitsigns="$gitsigns+"
+
+  local ahead="$(git rev-list --count @{upstream}..HEAD 2>/dev/null)"
+  local behind="$(git rev-list --count HEAD..@{upstream} 2>/dev/null)"
+  [ $ahead -gt 0 ] && gitsigns="$gitsigns↑"
+  [ $behind -gt 0 ] && gitsigns="$gitsigns↓"
+
+  if [ -n "$gitsigns" ] || [ -n "$branch" ]; then
+    if [ -n "$gitsigns" ]; then
+      gitsigns="\e[1;31m[$gitsigns]"
+    fi
+    echo -n "\e[1;34m┃ \e[1;35m ${branch}$gitsigns\e[0m\n"
+  fi
+}
+
+prompt_jobs_line() {
+  local job_count="$(echo -p '\j')"
+  if [ "$job_count" -gt 0 ]; then
+    echo -n "\e[1;34m┃ \e[1;33m󰒓 $job_count job(s) running\e[0m\n"
+  fi
+}
+
+prompt_ssh_line() {
+  local ssh_server="$(echo $SSH_CONNECTION | cut -f3 -d' ')"
+  [ -n "$ssh_server" ] && echo -n "\e[1;34m┃ \e[1;39m🌐 $ssh_server\e[0m\n"
+}
+
+prompt_pwd_line() {
+  echo -p "\e[1;34m┣━━ \e[1;36m\W\e[1;32m/"
+}
+
+prompt_dollar_line() {
+  local dollar="$(echo -p "\$ ")"
+  local dollar="$(echo -e "\e[1;32m$dollar\e[0m")"
+  echo -n "\e[1;34m┗━ $dollar "
+}
+
+prompt() {
+  local statline="$(prompt_stat_line)"
+  local topline="$(prompt_topline)"
+  local gitline="$(prompt_git_line)"
+  local jobsline="$(prompt_jobs_line)"
+  local sshline="$(prompt_ssh_line)"
+  local pwdline="$(prompt_pwd_line)"
+  local dollarline="$(prompt_dollar_line)"
+  local prompt="$topline$statline$gitline$jobsline$sshline$pwdline\n$dollarline"
+
+  echo -en "$prompt"
+}
+
+export PS1="\!prompt "
+```

src/readline/linebuf.rs

@@ -321,7 +321,7 @@ pub struct LineBuf {
   pub cursor: ClampedUsize,                 // Used to index grapheme_indices
 
   pub select_mode: Option<SelectMode>,
-  pub select_range: Option<(usize, usize)>,
+  select_range: Option<(usize, usize)>,
   pub last_selection: Option<(usize, usize)>,
 
   pub insert_mode_start_pos: Option<usize>,
@@ -542,6 +542,9 @@ impl LineBuf {
   }
   pub fn slice_to(&mut self, end: usize) -> Option<&str> {
     self.update_graphemes_lazy();
+		self.read_slice_to(end)
+  }
+  pub fn read_slice_to(&self, end: usize) -> Option<&str> {
     let grapheme_index = self.grapheme_indices().get(end).copied().or_else(|| {
       if end == self.grapheme_indices().len() {
         Some(self.buffer.len())
@@ -559,6 +562,9 @@ impl LineBuf {
   pub fn slice_to_cursor(&mut self) -> Option<&str> {
     self.slice_to(self.cursor.get())
   }
+  pub fn read_slice_to_cursor(&self) -> Option<&str> {
+    self.read_slice_to(self.cursor.get())
+  }
   pub fn slice_to_cursor_inclusive(&mut self) -> Option<&str> {
     self.slice_to(self.cursor.ret_add(1))
   }
@@ -614,14 +620,31 @@ impl LineBuf {
     self.update_graphemes();
   }
   pub fn select_range(&self) -> Option<(usize, usize)> {
+		match self.select_mode? {
+			SelectMode::Char(_) => {
 				self.select_range
 			}
+			SelectMode::Line(_) => {
+				let (start, end) = self.select_range?;
+				let start = self.pos_line_number(start);
+				let end = self.pos_line_number(end);
+				let (select_start,_) = self.line_bounds(start);
+				let (_,select_end) = self.line_bounds(end);
+				if self.read_grapheme_before(select_end).is_some_and(|gr| gr == "\n") {
+					Some((select_start, select_end - 1))
+				} else {
+					Some((select_start, select_end))
+				}
+			}
+			SelectMode::Block(_) => todo!(),
+		}
+  }
   pub fn start_selecting(&mut self, mode: SelectMode) {
-    self.select_mode = Some(mode);
 		let range_start = self.cursor;
 		let mut range_end = self.cursor;
 		range_end.add(1);
 		self.select_range = Some((range_start.get(), range_end.get()));
+    self.select_mode = Some(mode);
   }
   pub fn stop_selecting(&mut self) {
     self.select_mode = None;
@@ -629,12 +652,18 @@ impl LineBuf {
       self.last_selection = self.select_range.take();
     }
   }
-  pub fn total_lines(&mut self) -> usize {
+  pub fn total_lines(&self) -> usize {
     self.buffer.graphemes(true).filter(|g| *g == "\n").count()
   }
-  pub fn cursor_line_number(&mut self) -> usize {
+
+	pub fn pos_line_number(&self, pos: usize) -> usize {
+		self.read_slice_to(pos)
+			.map(|slice| slice.graphemes(true).filter(|g| *g == "\n").count())
+			.unwrap_or(0)
+	}
+  pub fn cursor_line_number(&self) -> usize {
     self
-      .slice_to_cursor()
+      .read_slice_to_cursor()
       .map(|slice| slice.graphemes(true).filter(|g| *g == "\n").count())
       .unwrap_or(0)
   }
@@ -772,7 +801,7 @@ impl LineBuf {
 
     Some((start, end))
   }
-  pub fn line_bounds(&mut self, n: usize) -> (usize, usize) {
+  pub fn line_bounds(&self, n: usize) -> (usize, usize) {
     if n > self.total_lines() {
       panic!(
         "Attempted to find line {n} when there are only {} lines",
@@ -2321,7 +2350,7 @@ impl LineBuf {
         return;
       };
       match mode {
-        SelectMode::Char(anchor) => match anchor {
+        SelectMode::Line(anchor) | SelectMode::Char(anchor) => match anchor {
           SelectAnchor::Start => {
             start = self.cursor.get();
           }
@@ -2329,14 +2358,6 @@ impl LineBuf {
             end = self.cursor.get();
           }
         },
-        SelectMode::Line(anchor) => match anchor {
-					SelectAnchor::Start => {
-						start = self.start_of_line();
-					}
-					SelectAnchor::End => {
-						end = self.end_of_line();
-					}
-				}
         SelectMode::Block(anchor) => todo!(),
       }
       if start >= end {
@@ -2381,7 +2402,7 @@ impl LineBuf {
 				}
 			}
 			MotionKind::Exclusive((start,end)) => {
-				if self.select_range().is_none() {
+				if self.select_range.is_none() {
 					self.cursor.set(start)
 				} else {
 					let end = end.saturating_sub(1);
@@ -2395,7 +2416,14 @@ impl LineBuf {
   }
   pub fn range_from_motion(&mut self, motion: &MotionKind) -> Option<(usize, usize)> {
     let range = match motion {
-      MotionKind::On(pos) => ordered(self.cursor.get(), *pos),
+      MotionKind::On(pos) => {
+				let cursor_pos = self.cursor.get();
+				if cursor_pos == *pos {
+					ordered(cursor_pos, pos + 1) // scary
+				} else {
+					ordered(cursor_pos, *pos)
+				}
+			}
       MotionKind::Onto(pos) => {
         // For motions which include the character at the cursor during operations
         // but exclude the character during movements
@@ -2439,20 +2467,29 @@ impl LineBuf {
   ) -> ShResult<()> {
     match verb {
       Verb::Delete | Verb::Yank | Verb::Change => {
+				log::debug!("Executing verb: {verb:?} with motion: {motion:?}");
         let Some((mut start, mut end)) = self.range_from_motion(&motion) else {
+					log::debug!("No range from motion, nothing to do");
           return Ok(());
         };
+				log::debug!("Initial range from motion: ({start}, {end})");
+				log::debug!("self.grapheme_indices().len(): {}", self.grapheme_indices().len());
 
 				let mut do_indent = false;
 				if verb == Verb::Change && (start,end) == self.this_line() {
 					do_indent = read_shopts(|o| o.prompt.auto_indent);
 				}
 
-        let text = if verb == Verb::Yank {
+        let mut text = if verb == Verb::Yank {
           self
             .slice(start..end)
             .map(|c| c.to_string())
             .unwrap_or_default()
+				} else if start == self.grapheme_indices().len() && end == self.grapheme_indices().len() {
+					// user is in normal mode and pressed 'x' on the last char in the buffer
+					let drained = self.drain(end.saturating_sub(1)..end);
+					self.update_graphemes();
+					drained
         } else {
           let drained = self.drain(start..end);
           self.update_graphemes();
@@ -2460,9 +2497,13 @@ impl LineBuf {
         };
         let is_linewise = matches!(
           motion,
-          MotionKind::InclusiveWithTargetCol(..) | MotionKind::ExclusiveWithTargetCol(..)
+          MotionKind::InclusiveWithTargetCol(..) |
-        );
+					MotionKind::ExclusiveWithTargetCol(..)
+        ) || matches!(self.select_mode, Some(SelectMode::Line(_)));
         let register_content = if is_linewise {
+					if !text.ends_with('\n') && !text.is_empty() {
+						text.push('\n');
+					}
           RegisterContent::Line(text)
         } else {
           RegisterContent::Span(text)
@@ -2649,7 +2690,7 @@ impl LineBuf {
         if content.is_empty() {
           return Ok(());
         }
-				if let Some(range) = self.select_range {
+				if let Some(range) = self.select_range() {
 					let register_text = self.drain_inclusive(range.0..=range.1);
 					write_register(None, RegisterContent::Span(register_text)); // swap deleted text into register
 
@@ -2688,7 +2729,7 @@ impl LineBuf {
         }
       }
       Verb::SwapVisualAnchor => {
-        if let Some((start, end)) = self.select_range()
+        if let Some((start, end)) = self.select_range
           && let Some(mut mode) = self.select_mode
         {
           mode.invert_anchor();
@@ -2960,7 +3001,7 @@ impl LineBuf {
           .map(|m| self.eval_motion(verb_ref.as_ref(), m))
           .unwrap_or({
             self
-              .select_range
+              .select_range()
               .map(MotionKind::Inclusive)
               .unwrap_or(MotionKind::Null)
           })
@@ -3028,15 +3069,11 @@ impl LineBuf {
 impl Display for LineBuf {
   fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
     let mut full_buf = self.buffer.clone();
-    if let Some((start, end)) = self.select_range {
+    if let Some((start, end)) = self.select_range() {
       let mode = self.select_mode.unwrap();
       let start_byte = self.read_idx_byte_pos(start);
-      let end_byte = self.read_idx_byte_pos(end);
+      let end_byte = self.read_idx_byte_pos(end).min(full_buf.len());
 
-			if start_byte >= full_buf.len() || end_byte >= full_buf.len() {
-				log::warn!("Selection range '{:?}' is out of bounds for buffer of length {}, clearing selection", (start, end), full_buf.len());
-				return write!(f, "{}", full_buf);
-			}
 
       match mode.anchor() {
         SelectAnchor::Start => {
@@ -3044,11 +3081,13 @@ impl Display for LineBuf {
           if *inclusive.end() == full_buf.len() {
             inclusive = start_byte..=end_byte.saturating_sub(1);
           }
-          let selected = format!("{}{}{}", markers::VISUAL_MODE_START, &full_buf[inclusive.clone()], markers::VISUAL_MODE_END);
+          let selected = format!("{}{}{}", markers::VISUAL_MODE_START, &full_buf[inclusive.clone()], markers::VISUAL_MODE_END)
+						.replace("\n", format!("\n{}",markers::VISUAL_MODE_START).as_str());
           full_buf.replace_range(inclusive, &selected);
         }
         SelectAnchor::End => {
-          let selected = format!("{}{}{}", markers::VISUAL_MODE_START, &full_buf[start..end], markers::VISUAL_MODE_END);
+          let selected = format!("{}{}{}", markers::VISUAL_MODE_START, &full_buf[start_byte..end_byte], markers::VISUAL_MODE_END)
+						.replace("\n", format!("\n{}",markers::VISUAL_MODE_START).as_str());
           full_buf.replace_range(start_byte..end_byte, &selected);
         }
       }

src/readline/mod.rs

@@ -561,7 +561,7 @@ impl ShedVi {
   }
 
   pub fn exec_cmd(&mut self, mut cmd: ViCmd) -> ShResult<()> {
-    let mut selecting = false;
+    let mut select_mode = None;
     let mut is_insert_mode = false;
     if cmd.is_mode_transition() {
       let count = cmd.verb_count();
@@ -588,7 +588,11 @@ impl ShedVi {
           return self.editor.exec_cmd(cmd);
         }
         Verb::VisualMode => {
-          selecting = true;
+          select_mode = Some(SelectMode::Char(SelectAnchor::End));
+          Box::new(ViVisual::new())
+        }
+        Verb::VisualModeLine => {
+          select_mode = Some(SelectMode::Line(SelectAnchor::End));
           Box::new(ViVisual::new())
         }
 
@@ -606,10 +610,8 @@ impl ShedVi {
       self.editor.set_cursor_clamp(self.mode.clamp_cursor());
       self.editor.exec_cmd(cmd)?;
 
-      if selecting {
+      if let Some(sel_mode) = select_mode {
-        self
+        self.editor.start_selecting(sel_mode);
-          .editor
-          .start_selecting(SelectMode::Char(SelectAnchor::End));
       } else {
         self.editor.stop_selecting();
       }

src/readline/term.rs

@@ -117,12 +117,12 @@ fn enumerate_lines(s: &str, left_pad: usize) -> String {
 				let trail_pad = left_pad.saturating_sub(prefix_len);
 				if i == total_lines - 1 {
 					// Don't add a newline to the last line
-					write!(acc, "\x1b[90m{}{num} |\x1b[0m {}{ln}",
+					write!(acc, "\x1b[0m\x1b[90m{}{num} |\x1b[0m {}{ln}",
 						" ".repeat(num_pad),
 						" ".repeat(trail_pad),
 					).unwrap();
 				} else {
-					writeln!(acc, "\x1b[90m{}{num} |\x1b[0m {}{ln}",
+					writeln!(acc, "\x1b[0m\x1b[90m{}{num} |\x1b[0m {}{ln}",
 						" ".repeat(num_pad),
 						" ".repeat(trail_pad),
 					).unwrap();

src/readline/vicmd.rs

@@ -182,6 +182,7 @@ impl ViCmd {
           | Verb::NormalMode
           | Verb::VisualModeSelectLast
           | Verb::VisualMode
+          | Verb::VisualModeLine
           | Verb::ReplaceMode
       )
     })

src/readline/vimode.rs

@@ -1018,6 +1018,15 @@ impl ViNormal {
 impl ViMode for ViNormal {
   fn handle_key(&mut self, key: E) -> Option<ViCmd> {
     let mut cmd = match key {
+			E(K::Char('V'), M::NONE) => {
+				Some(ViCmd {
+					register: Default::default(),
+					verb: Some(VerbCmd(1, Verb::VisualModeLine)),
+					motion: None,
+					raw_seq: "".into(),
+					flags: self.flags(),
+				})
+			}
       E(K::Char(ch), M::NONE) => self.try_parse(ch),
       E(K::Backspace, M::NONE) => Some(ViCmd {
         register: Default::default(),
@@ -1041,15 +1050,6 @@ impl ViMode for ViNormal {
         self.clear_cmd();
         None
       }
-			E(K::Char('V'), M::SHIFT) => {
-				Some(ViCmd {
-					register: Default::default(),
-					verb: Some(VerbCmd(1, Verb::VisualModeLine)),
-					motion: None,
-					raw_seq: "".into(),
-					flags: self.flags() | CmdFlags::VISUAL_LINE,
-				})
-			}
       _ => {
         if let Some(cmd) = common_cmds(key) {
           self.clear_cmd();