radareorg/radare2

Add a ruler to horizontal histogram output (e.g. `p==`)

Open

#14,697 opened on Jul 30, 2019

View on GitHub
 (0 comments) (0 reactions) (1 assignee)C (23,826 stars) (3,229 forks)batch import
consoleuienhancementgood first issue

Description

Show also the value ranges on the right, like here: image

Note, if scr.utf8=true is enabled, the ruler line should use vertical Unicode line character to be continuous. Also there is no need to name the axes. And no need for horizontal ruler, just vertical one.

Contributor guide

Tech stack
c
Domain
cli
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
C programmingradare2 codebase knowledgeUTF 8 handling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
The main implementation resides in the histogram output code, likely in libr/core/ or similar. Adding a ruler requires computing column positions and printing vertical bar characters. When scr.utf8 is enabled, use Unicode vertical line (U+2502) instead of ASCII. Examine the existing histogram loop for integration.