Git diff with line numbers (Git log with line numbers)

Question

When I do a git diff or a git log -p, how do I get line numbers of the source file(s) inlined with the output?

I tried to look it up

Answer 1

Here's two more solutions, expanding on Andy Talkowski's code.

Plain text:

  git diff | gawk 'match($0,"^@@ -([0-9]+),[0-9]+ [+]([0-9]+),[0-9]+ @@",a){left=a[1];right=a[2];next};\
   /^(---|\+\+\+|[^-+ ])/{print;next};\
   {line=substr($0,2)};\
   /^-/{print "-" left++ ":" line;next};\
   /^[+]/{print "+" right++ ":" line;next};\
   {print "(" left++ "," right++ "):"line}'

Colored text, assuming \033[66m is the format for color codes:

  git diff --color=always | \
    gawk '{bare=$0;gsub("\033[[][0-9]*m","",bare)};\
      match(bare,"^@@ -([0-9]+),[0-9]+ [+]([0-9]+),[0-9]+ @@",a){left=a[1];right=a[2];next};\
      bare ~ /^(---|\+\+\+|[^-+ ])/{print;next};\
      {line=gensub("^(\033[[][0-9]*m)?(.)","\\2\\1",1,$0)};\
      bare~/^-/{print "-"left++ ":" line;next};\
      bare~/^[+]/{print "+"right++ ":" line;next};\
      {print "("left++","right++"):"line;next}'

The code changes lines that start with - and + to -1:- and +1:+, respectively, and lines that start with nothing to (5,6):. The numbers are the line numbers from the respective file.