diff options
Diffstat (limited to 'src/guile')
| -rw-r--r-- | src/guile/skribilo/package/diff.scm | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/src/guile/skribilo/package/diff.scm b/src/guile/skribilo/package/diff.scm index 6e8c60b..116a6bd 100644 --- a/src/guile/skribilo/package/diff.scm +++ b/src/guile/skribilo/package/diff.scm @@ -166,7 +166,8 @@ (define %undiffable-markups ;; List of markups to not diff. - '(ref url-ref bib-ref bib-ref+ line-ref unref + '(ref url-ref bib-ref bib-ref+ line-ref unref numref + eq ;; XXX: not supported because of the `eq-evaluate' thing figref ;; non-standard mark image symbol lout-illustration @@ -197,7 +198,12 @@ (define (make-diff-document ast1 ast2) ;; Return a document based on AST2 that highlights differences between AST1 - ;; and AST2, enclosing unchanged parts in `unchanged' markups, etc. + ;; and AST2, enclosing unchanged parts in `unchanged' markups, etc. AST2 + ;; is used as the "reference" tree, thus changes from AST1 to AST2 are + ;; shown in the resulting document. + (define (undiffable? kind) + (memq kind %undiffable-markups)) + (let loop ((ast1 ast1) (ast2 ast2)) ;;(format (current-error-port) "diff: ~a ~a~%" ast1 ast2) @@ -240,10 +246,13 @@ (ident ident) (class class) (options opts) - (body (loop (if (markup? ast1) - (markup-body ast1) - ast1) - body))))) + (body (if (undiffable? kind) + body + (loop (if (and (container? ast1) + (is-markup? ast1 kind)) + (markup-body ast1) + ast1) + body)))))) ((markup? ast2) (let ((kind (markup-markup ast2)) @@ -256,20 +265,32 @@ (ident ident) (class class) (options opts) - (body (if (memq kind %undiffable-markups) + (body (if (undiffable? kind) body - (loop (if (markup? ast1) + (loop (if (is-markup? ast1 kind) (markup-body ast1) ast1) body)))))) ((list? ast2) (if (list? ast1) - (map loop ast1 ast2) + (let liip ((ast1 ast1) + (ast2 ast2) + (result '())) + (if (null? ast2) + (reverse! result) + (liip (if (null? ast1) ast1 (cdr ast1)) + (cdr ast2) + (cons (loop (if (null? ast1) #f (car ast1)) + (car ast2)) + result)))) (map (lambda (x) (loop ast1 x)) ast2))) + ((equal? ast1 ast2) + (unchanged ast1)) + (else (insertion ast2))))) |