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bug#28645: 26.0.50; semantic-ia-fast-jump jumps to a random place in buf

From: Constantine
Subject: bug#28645: 26.0.50; semantic-ia-fast-jump jumps to a random place in buffer
Date: Fri, 29 Sep 2017 17:57:11 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

On 29.09.2017 17:42, Dmitry Gutov wrote:
On 9/29/17 3:23 PM, Constantine wrote:
'> Result: it jumped to "myfunc2" declaration, not to "myfunc1" as it ought

I also want to note that though ATM I am using emacs-git, I've seen the
problem for don't remember how long, just didn't report.

Thanks for the report. You appear to have fallen victim of our windowing improvements. I'm not sure this is the correct fix (Martin?), but here's a patch that seems to correct the behavior.

diff --git a/lisp/cedet/semantic/ia.el b/lisp/cedet/semantic/ia.el
index d4201fcf51..0692d03aca 100644
--- a/lisp/cedet/semantic/ia.el
+++ b/lisp/cedet/semantic/ia.el
@@ -322,7 +322,8 @@ semantic-ia--fast-jump-helper
    (semantic-go-to-tag dest)
    ;; 3) go-to-tag doesn't switch the buffer in the current window,
    ;;    so it is like find-file-noselect.  Bring it forward.
-  (switch-to-buffer (current-buffer))
+  (let (switch-to-buffer-preserve-window-point)
+    (switch-to-buffer (current-buffer)))
    ;; 4) Fancy pulsing.
    (pulse-momentary-highlight-one-line (point))

Yay, thank you, works for me!

Tested-by: Constantine Kharlamov <address@hidden>

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