Correct the position of point in some line-up functions.

progmodes/cc-align.el (c-lineup-whitesmith-in-block, c-lineup-assignments)
(c-lineup-gcc-asm-reg ): take position of point at column 0 rather than
at a random place in the line.
doc/misc/cc-mode.texi (Custom Line-Up): State explicitly that point
starts at a random position in the line being indented.

1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/progmodes/cc-align.el b/lisp/progmodes/cc-align.el
index cdd0561a054..33836f25335 100644
--- a/lisp/progmodes/cc-align.el
+++ b/lisp/progmodes/cc-align.el
@@ -737,7 +737,7 @@ arglist-cont-nonempty."
               (setq startpos (c-langelem-pos langelem)))))
 
       (setq startpos (c-langelem-pos langelem)
-            endpos (point))
+            endpos (c-point 'bol))
 
       ;; Find a syntactically relevant and unnested "=" token on the
       ;; current line.  equalp is in that case set to the number of
@@ -1039,6 +1039,7 @@ brace-list-close, brace-list-intro, statement-block-intro,
 arglist-intro, arglist-cont-nonempty, arglist-close, and all in*
 symbols, e.g. inclass and inextern-lang."
   (save-excursion
+    (beginning-of-line)
     (if (and (c-go-up-list-backward)
              (= (point) (c-point 'boi)))
         nil
@@ -1191,6 +1192,7 @@ Works with: arglist-cont, arglist-cont-nonempty."
   (let ((orig-pos (point))
         alignto)
     (save-excursion
+      (beginning-of-line)
       (and
        c-opt-asm-stmt-key