editorFindCallback prevents search results navigation

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
76/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
c
Domain
cli

Research direction

Start at the editorFindCallback entry point in the kilo source and reproduce the issue by searching, then using the arrow keys to move between results. Done means both previous and next result navigation leaves the editor on the selected result instead of immediately returning to the original one.

Written by the indexing model from the issue text.

Description

Heyy, while doing the kilo guide, i stumbled across a bug with my editor, for some reason when i press the arrow keys to navigate to the previous and next search result the editor jumped to the next result (as expected) but then imediately jumps back to the previous result where we were originally (preventing search navigation)

To fix this, simply edit the editorFindCallback with the changes...

void editorFindCallback(char *query, int key) {
  static int last_match = -1;
  static int direction = 1;


  // Empty queries reset searching from top
  if (strlen(query) == 0) {
	  last_match = -1;
	  return;
  }

  int current;

  if (key == '\r' || key == '\x1b') {
    last_match = -1;
    direction = 1;
    return;
  } else if (key == ARROW_RIGHT || key == ARROW_DOWN) {
	current = last_match+1; // Search from next row
    direction = 1;
  } else if (key == ARROW_LEFT || key == ARROW_UP) {
	current = last_match-1; // Search from previous row
    direction = -1;
  } else {
    direction = 1;
	current = last_match; // Keep search on current row with current result to terminate early
  }

  if (last_match == -1) direction = 1;
  int i;
  for (i = 0; i < E.numrows; i++) {
	// Clamp current
    if (current == -1) current = E.numrows - 1;
    else if (current == E.numrows) current = 0;

	// Immediately search without moving current positon
    erow *row = &E.row[current];
    char *match = strstr(row->render, query);
    if (match) {
      last_match = current;
      E.cy = current;
      E.cx = editorRowRxToCx(row, match - row->render);
      E.rowoff = E.numrows;
      break;
    }

    current += direction;
  }
}
Dominant language
C
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