When I edit an HTML document, Geany's syntax highlighter allows
```
<!DOCTYPE html>
```
But if I write 'doctype' in lowercase, the syntax highlighter marks 'doctype' in red. According to the HTML specification, 'doctype' is not case-sensitive:
https://www.w3.org/TR/html51/syntax.html#the-doctype
So the syntax highlighter should allow this.
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I apologize in advance, this is a pretty weird scenario.
Steps to reproduce:
1. Open a new file (Ctrl-N)
1. Type something into it, for example `hello world`
1. Save it (Ctrl-S), but leave the file chooser open (so it's not really saved)
1. From the command line (different window, same user, same X.org session), run `geany necronomicon.txt`, where `necronomicon.txt` is an existing file with, say, `Hail Satan!` in it. Observe that Geany opens the file and switches to it. Of course the file chooser is focused instead, because it's modal. But if you move it out of the way, you see `necronomicon.txt` open.
1. Enter `lovely_message.txt` in the file chooser and press OK.
Expected behavior: a lovely message in `lovely_message.txt`, and a demonic one in `necronomicon.txt`
Actual behavior: a demonic message in `lovely_message.txt`, with `necronomicon.txt` untouched, and the "new unsaved tab" is still unsaved.
My interpretation: apparently, Geany decides which file it wants to save 1) *after* the file chooser is done, and 2) depends only on which tab happens to be open.
So the order 3-4-5 is my fault, and a pretty extravagant use case. But I think there are other ways to handle this which are more predictable by the user.
Using Geany 1.29, "Jowar, compiled 2016-11-16 or later".
I could not find any similar bug, so I expect (without trying it out) that it also fails with a newer version.
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Segmentation fault when split window is used with some activity like editing. I am using the gtk3 build.
BackTrace:
```
Thread 1 "geany" received signal SIGSEGV, Segmentation fault.
0x00007ffff7a02eed in Document::MovePositionOutsideChar (this=0x651dd0, pos=291,
moveDir=1, checkLineEnd=false) at src/Document.cxx:628
628 if (pos >= Length())
#0 0x00007ffff7a02eed in Document::MovePositionOutsideChar (this=0x651dd0,
pos=291, moveDir=1, checkLineEnd=false) at src/Document.cxx:628
#1 0x00007ffff7a043bb in Document::CountCharacters (this=0x651dd0,
startPos=<optimized out>, endPos=292) at src/Document.cxx:1399
#2 0x00007ffff79e8938 in ScintillaGTKAccessible::Notify (this=0x2340610,
nt=0x7fffffffc620) at gtk/ScintillaGTKAccessible.cxx:866
#3 0x00007ffff79e8d47 in ScintillaGTKAccessible::SciNotify (
widget=<optimized out>, code=<optimized out>, nt=<optimized out>,
data=<optimized out>) at gtk/ScintillaGTKAccessible.h:33
#4 0x00007ffff55bbfa5 in g_closure_invoke ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5 0x00007ffff55cdfc1 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6 0x00007ffff55d6d5c in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7 0x00007ffff55d708f in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8 0x00007ffff79decdf in ScintillaGTK::NotifyParent (this=0x2cf24f0, scn=...)
at gtk/ScintillaGTK.cxx:1088
---Type <return> to continue, or q <return> to quit---
#9 0x00007ffff7a19aaa in Editor::NotifyModified (this=0x2cf24f0, mh=...)
at src/Editor.cxx:2713
#10 0x00007ffff7a058ae in Document::NotifyModified (this=this@entry=0x2cee530,
mh=...) at src/Document.cxx:2267
#11 0x00007ffff7a07540 in Document::DeleteChars (this=0x2cee530, pos=291, len=1)
at src/Document.cxx:1054
#12 0x00007ffff7a12cf7 in Editor::DelCharBack (this=0x35fce20,
allowLineStartDeletion=true) at src/Editor.cxx:2265
#13 0x00007ffff7a16a4a in Editor::KeyCommand (this=0x35fce20,
iMessage=<optimized out>) at src/Editor.cxx:3726
#14 0x00007ffff7a20126 in Editor::WndProc (this=0x35fce20, iMessage=2326,
wParam=0, lParam=0) at src/Editor.cxx:7478
#15 0x00007ffff79e48a6 in ScintillaGTK::WndProc (this=0x35fce20,
iMessage=<optimized out>, wParam=<optimized out>, lParam=0)
at gtk/ScintillaGTK.cxx:862
#16 0x00007ffff7a0e7af in Editor::KeyDownWithModifiers (this=0x35fce20, key=8,
modifiers=0, consumed=0x7fffffffcba7) at src/Editor.cxx:3842
#17 0x00007ffff79e1973 in ScintillaGTK::KeyThis (this=0x35fce20, event=0x360c370)
---Type <return> to continue, or q <return> to quit---
at gtk/ScintillaGTK.cxx:2074
#18 0x00007ffff6c28fac in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#19 0x00007ffff55bbeff in g_closure_invoke ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff55ce56e in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff55d67f9 in g_signal_emit_valist ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff55d708f in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007ffff6d66c5c in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#24 0x00007ffff6d86cdb in gtk_window_propagate_key_event ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#25 0x00007ffff6d8a15b in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#26 0x00007ffff6c28fac in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#27 0x00007ffff55bbfa5 in g_closure_invoke ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff55ce56e in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007ffff55d67f9 in g_signal_emit_valist ()
---Type <return> to continue, or q <return> to quit---
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007ffff55d708f in g_signal_emit ()
from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007ffff6d66c5c in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#32 0x00007ffff6c264c9 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#33 0x00007ffff6c281bc in gtk_main_do_event ()
from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#34 0x00007ffff6795ca2 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#35 0x00007ffff50e1197 in g_main_context_dispatch ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ffff50e13f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007ffff50e1712 in g_main_loop_run ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007ffff6c27395 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#39 0x00007ffff79a0427 in main_lib (argc=1, argv=0x7fffffffd948) at libmain.c:1233
#40 0x00007ffff7365830 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#41 0x00000000004005d9 in _start ()
```
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