Feature or enhancement
Proposal:
What are people's thoughts on adding a color: bool arg to difflib.unified_diff so that it injects ANSI terminal codes to color things in the way that git diff would?
New API:
difflib.unified_diff(a, b, fromfile='', tofile='', fromfiledate='', tofiledate='', n=3, lineterm='\n', color=False)
Open questions:
- Should the colors be configurable? Eg via dict
colors={"equal": "\033[31;1;4m", "delete": "...", "insert": "...", "header": "...", "hunk": "..."}- The default would be the basic 4bit colors used by
git diff.:- header: bold
\033[1m - hunk lines: cyan
\033[36m - removed: red
\033[31m - added: green
\033[32m - equal: no formatting
- header: bold
- This might be useful for nonstandard terminal colors?
- The default would be the basic 4bit colors used by
- Should this be added to other functions like
ndiffandcontextdiff?
I'd be happy to tackle this. Excluding tests, it looks to be O(20 LOC) changes.
$ cat python mydiff.py
cat: python: No such file or directory
import difflib
import pathlib
file1 = pathlib.Path("a.txt")
file2 = pathlib.Path("b.txt")
udiff = difflib.unified_diff(
file1.read_text().splitlines(),
file2.read_text().splitlines(),
fromfile=str(file1),
tofile=str(file2),
)
for line in udiff:
print(line)
$ python mydiff.py
--- a.txt
+++ b.txt
@@ -1,3 +1,3 @@
1a
-2b
3c
+4d
Has this already been discussed elsewhere?
This is a minor feature, which does not need previous discussion elsewhere
Links to previous discussion of this feature:
No response