Which vim commands start with g?

Vim documentation http://vimdoc.sourceforge.net/ . If you go to HTML documents, you will find |reference_toc| More detailed information for all commands

which includes |index.txt| alphabetical index of all commands

which - due to an unfortunate quirk with doc a file named index.txt

and linked as index.html

- does not actually lead to what you expect it to be.

In short, http://vimdoc.sourceforge.net/htmldoc/vimindex.html#g is the documentation you are looking for ("Commands starting with" g ").

Alternatively type :help *g*

in Vim.

(Sorry merlin2011, but your list is somewhat incomplete ...)

Some reformatting is used:

2.4 Commands starting with 'g'

 char        note action in Normal mode
------------------------------------------------------------------
g CTRL-A          only when compiled with MEM_PROFILE
                  defined: dump a memory profile
g CTRL-G          show information about current cursor
                  position
g CTRL-H          start Select block mode
g CTRL-]          |:tjump| to the tag under the cursor
g#             1  like "#", but without using "\<" and "\>"
g$             1  when 'wrap' off go to rightmost character of
                  the current line that is on the screen;
                  when 'wrap' on go to the rightmost character
                  of the current screen line
g&             2  repeat last ":s" on all lines
g'{mark}       1  like |'| but without changing the jumplist
g`{mark}       1  like |`| but without changing the jumplist
g*             1  like "*", but without using "\<" and "\>"
g0             1  when 'wrap' off go to leftmost character of
                  the current line that is on the screen;
                  when 'wrap' on go to the leftmost character
                  of the current screen line
g8                print hex value of bytes used in UTF-8
                  character under the cursor
g<                display previous command output
g?             2  Rot13 encoding operator
g??            2  Rot13 encode current line
g?g?           2  Rot13 encode current line
gD             1  go to definition of word under the cursor
                  in current file
gE             1  go backwards to the end of the previous
                  WORD
gH                start Select line mode
gI             2  like "I", but always start in column 1
gJ             2  join lines without inserting space
["x]gP         2  put the text [from register x] before the
                  cursor N times, leave the cursor after it
gQ                switch to "Ex" mode with Vim editing
gR             2  enter Virtual Replace mode
gU{motion}     2  make Nmove text uppercase
gV                don't reselect the previous Visual area
                  when executing a mapping or menu in Select
                  mode
g]                :tselect on the tag under the cursor
g^             1  when 'wrap' off go to leftmost non-white
                  character of the current line that is on
                  the screen; when 'wrap' on go to the
                  leftmost non-white character of the current
                  screen line
ga                print ascii value of character under the
                  cursor
gd             1  go to definition of word under the cursor
                  in current function
ge             1  go backwards to the end of the previous
                  word
gf                start editing the file whose name is under
                  the cursor
gF                start editing the file whose name is under
                  the cursor and jump to the line number
                  following the filename.
gg             1  cursor to line N, default first line
gh                start Select mode
gi             2  like "i", but first move to the |'^| mark
gj             1  like "j", but when 'wrap' on go N screen
                  lines down
gk             1  like "k", but when 'wrap' on go N screen
                  lines up
gm             1  go to character at middle of the screenline
go             1  cursor to byte N in the buffer
["x]gp         2  put the text [from register x] after the
                  cursor N times, leave the cursor after it
gq{motion}     2  format Nmove text
gr{char}       2  virtual replace N chars with {char}
gs                go to sleep for N seconds (default 1)
gu{motion}     2  make Nmove text lowercase
gv                reselect the previous Visual area
gw{motion}     2  format Nmove text and keep cursor
gx                execute application for file name under the
                  cursor (only with |netrw| plugin)
g@{motion}        call 'operatorfunc'
g~{motion}     2  swap case for Nmove text
g<Down>        1  same as "gj"
g<End>         1  same as "g$"
g<Home>        1  same as "g0"
g<LeftMouse>      same as <C-LeftMouse>
g<MiddleMouse>    same as <C-MiddleMouse>
g<RightMouse>     same as <C-RightMouse>
g<Up>          1  same as "gk"

note: 1 = cursor movement command; 2 = can be undone/redone