libgit2 - Decoding git log complex pretty format -

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i'm trying porting git-depending stuff libgit2 open source project.
1 of git calls weird:

git log --topo-order --no-color --parents --boundary -z --pretty=format:%m%hx%px%n%cn<%ce>%n%an<%ae>%n%at%n%s%n%b head --all

first of all, i'm interesting in format string. means x after h? unable find x specifier on official git site :/ , second question - can libgit2 complex formatting, or should process myself?

p.s. however, i'm pretty sure cannot :)

the x not format specifier.

the argument --pretty=format: or --pretty=tformat: (most users need tformat, code using -z adds nul character after each commit) contains both directives %m , %h, , literal text transcribed:

$ git log -n 3 --pretty=tformat:hello%x25world hello%world hello%world hello%world

here, hello , world strings copied through, while %x25 interpreted. since means "print character hex code 25" percent sign %, , -n 3 told git log stop after logging 3 commits, got 3 copies of hello%world.

the literal x works because %m prints 1 character not x, %h , %p print hashes not contain x, , %n prints newline—so whatever reading output can sure each commit begins marker character, x, commit hash, x, , each parent hash space between each, newline.

the %s%n%b sequence not entirely necessary (one use %b instead). i'm not sure off-hand, though, whether adjusts way "unusually formatted" commits—those not single subject line, followed newline, followed commit body—come out. does.

(i know nothing of libgit2.)


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