From 1db03ebecdccc00bf16b0aa0ebca08b512801c1d Mon Sep 17 00:00:00 2001
From: Leonard Hecker <leonard@hecker.io>
Date: Sun, 22 Jun 2025 21:07:51 +0200
Subject: [PATCH] wip

---
 .vscode/launch.json       |  6 +++---
 src/buffer/highlighter.rs | 38 ++++++++++++++++++++++++++++----------
 src/buffer/mod.rs         |  4 ++--
 3 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/.vscode/launch.json b/.vscode/launch.json
index d11a903..bbc204e 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -10,7 +10,7 @@
             "program": "${workspaceFolder}/target/debug/edit",
             "cwd": "${workspaceFolder}",
             "args": [
-                "${workspaceFolder}/src/bin/edit/main.rs"
+                "C:/Users/lhecker/projects/posh-git/src/GitPrompt.ps1"
             ],
         },
         {
@@ -21,7 +21,7 @@
             "program": "${workspaceFolder}/target/debug/edit",
             "cwd": "${workspaceFolder}",
             "args": [
-                "${workspaceFolder}/src/bin/edit/main.rs"
+                "C:/Users/lhecker/projects/posh-git/src/GitPrompt.ps1"
             ],
         },
         {
@@ -32,7 +32,7 @@
             "program": "${workspaceFolder}/target/debug/edit",
             "cwd": "${workspaceFolder}",
             "args": [
-                "${workspaceFolder}/src/bin/edit/main.rs"
+                "C:/Users/lhecker/projects/posh-git/src/GitPrompt.ps1"
             ],
         }
     ]
diff --git a/src/buffer/highlighter.rs b/src/buffer/highlighter.rs
index b03009c..2bcafa3 100644
--- a/src/buffer/highlighter.rs
+++ b/src/buffer/highlighter.rs
@@ -1,7 +1,7 @@
 #![allow(dead_code, unused_variables, unused_mut)]
 
 use std::fmt::Debug;
-use std::ops::{Range, RangeInclusive};
+use std::ops::Range;
 
 use crate::arena::{Arena, scratch_arena};
 use crate::document::ReadableDocument;
@@ -51,7 +51,7 @@ enum Test {
 }
 
 struct Language {
-    word_chars: &'static [RangeInclusive<u8>],
+    word_chars: &'static [u16; 6],
     states: &'static [&'static [Transition]],
 }
 
@@ -91,7 +91,20 @@ const POWERSHELL: Language = {
     const METHOD: u8 = 11;
 
     Language {
-        word_chars: &[b'0'..=b'9', b'A'..=b'Z', b'a'..=b'z', b'?'..=b'?', b'_'..=b'_'],
+        word_chars: &[
+            // /.-,+*)('&%$#"!
+            0b_1110110000101010,
+            // ?>=<;:9876543210
+            0b_1111011111111111,
+            // ONMLKJIHGFEDCBA@
+            0b_1111111111111110,
+            // _^]\[ZYXWVUTSRQP
+            0b_1111111111111111,
+            // onmlkjihgfedcba`
+            0b_1111111111111111,
+            //  ~}|{zyxwvutsrqp
+            0b_0100011111111111,
+        ],
         states: &[
             // GROUND
             &[
@@ -228,9 +241,14 @@ impl<'doc> Highlighter<'doc> {
         }
     }
 
-    fn fill_word_chars(dst: &mut [bool; 256], src: &[RangeInclusive<u8>]) {
-        for r in src {
-            dst[*r.start() as usize..=*r.end() as usize].fill(true);
+    fn fill_word_chars(dst: &mut [bool; 256], src: &[u16; 6]) {
+        for y in 0..src.len() {
+            let mut r = src[y];
+            while r != 0 {
+                let bit = r.trailing_zeros() as usize;
+                r &= !(1 << bit);
+                dst[32 + y * 16 + bit] = true;
+            }
         }
         dst[0x80..].fill(true);
     }
@@ -245,6 +263,10 @@ impl<'doc> Highlighter<'doc> {
         let mut line_buf = Vec::new_in(&*scratch);
         let mut res = Vec::new_in(arena);
 
+        if self.offset != 0 {
+            self.logical_pos_y += 1;
+        }
+
         // Accumulate a line of text into `line_buf`.
         {
             let mut chunk = self.doc.read_forward(self.offset);
@@ -254,10 +276,6 @@ impl<'doc> Highlighter<'doc> {
                 return res;
             }
 
-            if self.offset != 0 {
-                self.logical_pos_y += 1;
-            }
-
             loop {
                 let (off, line) = simd::lines_fwd(chunk, 0, 0, 1);
                 self.offset += off;
diff --git a/src/buffer/mod.rs b/src/buffer/mod.rs
index ee0e22a..fd9d204 100644
--- a/src/buffer/mod.rs
+++ b/src/buffer/mod.rs
@@ -1961,7 +1961,7 @@ impl TextBuffer {
                     global_off += chunk.len();
                 }
 
-                while highlighter.logical_pos_y() < cursor.logical_pos.y {
+                while highlighter.logical_pos_y() < cursor_beg.logical_pos.y - 1 {
                     let scratch_alt = scratch_arena(Some(&scratch));
                     _ = highlighter.parse_next_line(&scratch_alt);
                 }
@@ -1973,7 +1973,7 @@ impl TextBuffer {
                         HighlightKind::Comment => IndexedColor::Green,
                         HighlightKind::Number => IndexedColor::BrightGreen,
                         HighlightKind::String => IndexedColor::BrightRed,
-                        HighlightKind::Variable => IndexedColor::BrightCyan,
+                        HighlightKind::Variable => IndexedColor::BrightBlue,
                         HighlightKind::Operator => IndexedColor::White,
                         HighlightKind::Keyword => IndexedColor::BrightMagenta,
                         HighlightKind::Method => IndexedColor::BrightYellow,