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Commit c1b0489b authored by David Byers's avatar David Byers
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Added error check in lyskom-fill-message so errors in filling don't prevent displaying the message

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src/ChangeLog
View file @ c1b0489b
2001-05-10 David Byers <davby@ida.liu.se>
* lyskom-rest.el (lyskom-fill-message): Protect the filling loop
from errors (such as regexp stack overflows).
2001-05-09 David Byers <davby@ida.liu.se>
* ChangeLog: Set language environment.
......
src/lyskom-rest.el
View file @ c1b0489b
......@@ -1916,201 +1916,202 @@ in lyskom-messages."
;; Scan each line
;;
(while (not (eobp))
(setq current-line-length (lyskom-fill-message-line-length))
;;
;; Do some work on checking for constant differences
;;
(cond ((null length-difference)
(when (and current-line-length last-line-length)
(setq length-difference (- current-line-length
last-line-length))))
((eq constant-length 'maybe-not)
(setq constant-length nil))
(constant-length
(unless (= (- current-line-length last-line-length)
length-difference)
(setq constant-length 'maybe-not))))
(cond
;;
;; An empty line signifies a new paragraph. If we were scanning
;; a paragraph and it was to be filled, fill it.
;;
((looking-at "^\\s-*$")
(when (and in-paragraph
(not all-lines-colons)
(eq wrap-paragraph t)
(or (null constant-length)
(and (eq 0 length-difference)
(< paragraph-length lyskom-minimum-brick-size))
(and (not (eq 0 length-difference))
(< paragraph-length lyskom-minimum-triagle-size))))
(lyskom-fill-region start (1- (match-beginning 0)) nil t)
(lyskom-signal-reformatted-text 'reformat-filled))
(setq start (match-end 0)
in-paragraph nil
all-lines-colons t
wrap-paragraph 'maybe))
;;
;; We're in a paragraph, but wait! This looks like
;; a LysKOM text!
;;
((looking-at (concat "^" (regexp-quote (lyskom-get-string 'subject))
".*\n----"))
(setq wrap-paragraph nil))
;;
;; We're in a paragraph, but we see indentation, a dash or
;; something that looks like the end of a LysKOM text.
;; This has to mean something...
;;
((and in-paragraph
(looking-at "^\\s-+\\([^\n]*\\)\\(\n\\S-\\|\\'\\)")
(or (not (eq (point-max) (match-beginning 2)))
have-indented-paragraphs))
(setq have-indented-paragraphs t)
(when (and (eq wrap-paragraph t)
(not all-lines-colons)
(or (and (eq 0 length-difference)
(< paragraph-length lyskom-minimum-brick-size))
(and (not (eq 0 length-difference))
(< paragraph-length lyskom-minimum-triagle-size))
(null constant-length)))
(lyskom-fill-region start (match-beginning 0) nil t)
(lyskom-signal-reformatted-text 'reformat-filled))
(setq start (match-beginning 0)
in-paragraph t
paragraph-length 0
constant-length t
length-difference nil
last-line-length nil
all-lines-colons (lyskom-fill-message-colon-line)
single-line-regexp "\\(\\S-\\)"
fill-prefix nil
start (match-beginning 0)
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 1))))
((and in-paragraph
(looking-at "^\\s-*\\(-+\\|\\++\\)\\s-*\\S-"))
(when (and (eq wrap-paragraph t)
(not all-lines-colons)
(or (and (eq 0 length-difference)
(< paragraph-length lyskom-minimum-brick-size))
(and (not (eq 0 length-difference))
(< paragraph-length lyskom-minimum-triagle-size))
(null constant-length)))
(lyskom-fill-region start (match-beginning 0) nil t)
(lyskom-signal-reformatted-text 'reformat-filled))
(setq start (match-beginning 0)
in-paragraph t
paragraph-length 0
constant-length t
length-difference nil
all-lines-colons (lyskom-fill-message-colon-line)
last-line-length nil
single-line-regexp "\\(\\S-\\)"
fill-prefix nil
start (match-beginning 0)
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 1))))
;;
;; Here's a tricky one... We're not in a paragraph, and we
;; see what looks like an indented paragraph. Take care with
;; this one!
;;
((and (not in-paragraph)
(looking-at "\\(\\s-+\\)\\S-")
(looking-at (concat "\\(\\s-+\\)[^\n]*\n"
(match-string 1)
"\\(\\S-\\)")))
(setq in-paragraph t
paragraph-length 0
constant-length 0
length-difference nil
last-line-length nil
all-lines-colons (lyskom-fill-message-colon-line)
start (match-beginning 0)
fill-prefix (match-string 1)
single-line-regexp (concat (match-string 1) "\\(\\S-\\)")
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 2))))
;;
;; Not in a paragraph, but here comes some text. Let's start
;; a paragraph, shall we?
;;
((and (not in-paragraph)
(looking-at "\\s-*\\(\\S-\\)"))
(setq in-paragraph t
paragraph-length 0
all-lines-colons (lyskom-fill-message-colon-line)
constant-length t
length-difference nil
last-line-length nil
start (match-beginning 0)
fill-prefix nil
single-line-regexp "\\(\\S-\\)"
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 1))))
;;
(condition-case nil
(while (not (eobp))
(setq current-line-length (lyskom-fill-message-line-length))
;;
;; Do some work on checking for constant differences
;;
(cond ((null length-difference)
(when (and current-line-length last-line-length)
(setq length-difference (- current-line-length
last-line-length))))
((eq constant-length 'maybe-not)
(setq constant-length nil))
(constant-length
(unless (= (- current-line-length last-line-length)
length-difference)
(setq constant-length 'maybe-not))))
(cond
;;
;; An empty line signifies a new paragraph. If we were scanning
;; a paragraph and it was to be filled, fill it.
;;
((looking-at "^\\s-*$")
(when (and in-paragraph
(not all-lines-colons)
(eq wrap-paragraph t)
(or (null constant-length)
(and (eq 0 length-difference)
(< paragraph-length lyskom-minimum-brick-size))
(and (not (eq 0 length-difference))
(< paragraph-length lyskom-minimum-triagle-size))))
(lyskom-fill-region start (1- (match-beginning 0)) nil t)
(lyskom-signal-reformatted-text 'reformat-filled))
(setq start (match-end 0)
in-paragraph nil
all-lines-colons t
wrap-paragraph 'maybe))
;;
;; We're in a paragraph, but wait! This looks like
;; a LysKOM text!
;;
((looking-at (concat "^" (regexp-quote (lyskom-get-string 'subject))
".*\n----"))
(setq wrap-paragraph nil))
;;
;; We're in a paragraph, but we see indentation, a dash or
;; something that looks like the end of a LysKOM text.
;; This has to mean something...
;;
((and in-paragraph
(looking-at "^\\s-+\\([^\n]*\\)\\(\n\\S-\\|\\'\\)")
(or (not (eq (point-max) (match-beginning 2)))
have-indented-paragraphs))
(setq have-indented-paragraphs t)
(when (and (eq wrap-paragraph t)
(not all-lines-colons)
(or (and (eq 0 length-difference)
(< paragraph-length lyskom-minimum-brick-size))
(and (not (eq 0 length-difference))
(< paragraph-length lyskom-minimum-triagle-size))
(null constant-length)))
(lyskom-fill-region start (match-beginning 0) nil t)
(lyskom-signal-reformatted-text 'reformat-filled))
(setq start (match-beginning 0)
in-paragraph t
paragraph-length 0
constant-length t
length-difference nil
last-line-length nil
all-lines-colons (lyskom-fill-message-colon-line)
single-line-regexp "\\(\\S-\\)"
fill-prefix nil
start (match-beginning 0)
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 1))))
((and in-paragraph
(looking-at "^\\s-*\\(-+\\|\\++\\)\\s-*\\S-"))
(when (and (eq wrap-paragraph t)
(not all-lines-colons)
(or (and (eq 0 length-difference)
(< paragraph-length lyskom-minimum-brick-size))
(and (not (eq 0 length-difference))
(< paragraph-length lyskom-minimum-triagle-size))
(null constant-length)))
(lyskom-fill-region start (match-beginning 0) nil t)
(lyskom-signal-reformatted-text 'reformat-filled))
(setq start (match-beginning 0)
in-paragraph t
paragraph-length 0
constant-length t
length-difference nil
all-lines-colons (lyskom-fill-message-colon-line)
last-line-length nil
single-line-regexp "\\(\\S-\\)"
fill-prefix nil
start (match-beginning 0)
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 1))))
;;
;; Here's a tricky one... We're not in a paragraph, and we
;; see what looks like an indented paragraph. Take care with
;; this one!
;;
((and (not in-paragraph)
(looking-at "\\(\\s-+\\)\\S-")
(looking-at (concat "\\(\\s-+\\)[^\n]*\n"
(match-string 1)
"\\(\\S-\\)")))
(setq in-paragraph t
paragraph-length 0
constant-length 0
length-difference nil
last-line-length nil
all-lines-colons (lyskom-fill-message-colon-line)
start (match-beginning 0)
fill-prefix (match-string 1)
single-line-regexp (concat (match-string 1) "\\(\\S-\\)")
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 2))))
;;
;; Not in a paragraph, but here comes some text. Let's start
;; a paragraph, shall we?
;;
((and (not in-paragraph)
(looking-at "\\s-*\\(\\S-\\)"))
(setq in-paragraph t
paragraph-length 0
all-lines-colons (lyskom-fill-message-colon-line)
constant-length t
length-difference nil
last-line-length nil
start (match-beginning 0)
fill-prefix nil
single-line-regexp "\\(\\S-\\)"
wrap-paragraph (lyskom-fill-message-initial-wrap
current-line-length (match-beginning 1))))
;;
;; We're in a paragraph, but the line looks kind of strange
;;
((and in-paragraph
(or (not (looking-at single-line-regexp))
(and (< (char-to-int (char-after (match-beginning 1)))
(length lyskom-line-start-chars))
(not (aref lyskom-line-start-chars
(char-to-int
(char-after
(match-beginning 1))))))))
(setq wrap-paragraph nil))
;;
;; We're in a paragraph, the line looks OK, but is long. That
;; means we should probably be filling the paragraph later
;;
((and in-paragraph
wrap-paragraph
(> current-line-length fill-column))
(setq wrap-paragraph t))
)
;;
;; Check if the line starts with Foo:
;;
(when (and in-paragraph
all-lines-colons
(not (lyskom-fill-message-colon-line)))
(setq all-lines-colons nil))
;;
;; Certain things are guaranteed to disqualify the
;; current paragraph from wrapping, no matter what.
;; This is where we look for those.
;;
(when (and in-paragraph
wrap-paragraph)
(setq eol-point (save-excursion (end-of-line) (point)))
(when (re-search-forward "\
;;
((and in-paragraph
(or (not (looking-at single-line-regexp))
(and (< (char-to-int (char-after (match-beginning 1)))
(length lyskom-line-start-chars))
(not (aref lyskom-line-start-chars
(char-to-int
(char-after
(match-beginning 1))))))))
(setq wrap-paragraph nil))
;;
;; We're in a paragraph, the line looks OK, but is long. That
;; means we should probably be filling the paragraph later
;;
((and in-paragraph
wrap-paragraph
(> current-line-length fill-column))
(setq wrap-paragraph t))
)
;;
;; Check if the line starts with Foo:
;;
(when (and in-paragraph
all-lines-colons
(not (lyskom-fill-message-colon-line)))
(setq all-lines-colons nil))
;;
;; Certain things are guaranteed to disqualify the
;; current paragraph from wrapping, no matter what.
;; This is where we look for those.
;;
(when (and in-paragraph
wrap-paragraph)
(setq eol-point (save-excursion (end-of-line) (point)))
(when (re-search-forward "\
\\(\\S-[ \t][ \t][ \t]+\\S-\
\\|\\S-[ \t]* \t[ \t]*\\S-\
\\|[ \t]*\t [ \t]*\
......@@ -2120,16 +2121,19 @@ in lyskom-messages."
\\|\\*/\
\\|[^:]//\
\\)"
eol-point t)
(setq wrap-paragraph nil)))
eol-point t)
(setq wrap-paragraph nil)))
(setq last-line-length current-line-length)
(end-of-line)
(setq paragraph-length (1+ paragraph-length))
(unless (eobp)
(forward-line 1)
(beginning-of-line)))
(setq last-line-length current-line-length)
(end-of-line)
(setq paragraph-length (1+ paragraph-length))
(unless (eobp)
(forward-line 1)
(beginning-of-line)))
(error (goto-char (point-max))
(setq in-paragraph nil)))
;;
;; We've seen the end of buffer. Fill any unfilled junk.
......
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