add instructions

asklyphe-frontend/src/spellcheck.rs

@@ -3,9 +3,24 @@ use tracing::{debug, error};
 use std::{cmp, mem};
 use std::collections::BTreeMap;
 use std::sync::Mutex;
-// TODO: cache distances of strings/substrings
-// TODO: use binary search to find direct matches, and if that fails, calculate and cache the result in BTreeMap<word: String, closest_match: String>
 
+// how to generate words.txt:
+// clone https://github.com/en-wl/wordlist && cd wordlist
+// ./scowl wl --deaccent > words0.txt
+// filtered with this python script:
+// -----------------------------------
+// with open("words0.txt", "r") as f:
+// 	out = []
+// 	for line in f:
+// 		line = line.lower()
+// 		if not line in out:
+// 			out.append(line)
+// 	out.sort()
+// 	with open("words.txt", "w") as out_file:
+// 		for line in out:
+// 			out_file.write(f'{line}')
+// ------------------------------------
+// then use regex or similar to enclose every line in quotes and add comma, then add 'static KNOWN_WORDS: &[&str] = &[' to the start and '];' to the end
 include!("./words.txt");
 
 // a cache of misspelled words and the closest match in the database