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Diffstat (limited to 'docs/TODO')
| -rw-r--r-- | docs/TODO | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/docs/TODO b/docs/TODO deleted file mode 100644 index 6fe88295d5ff4..0000000000000 --- a/docs/TODO +++ /dev/null @@ -1,147 +0,0 @@ -CL: In single-line screens, have to press 'q' twice when quitting out - of a ":set all" display. - -COMMON: There's a serious problem with error returns -- we need to separate - command failure from fatal error, consistently, over the entire source - tree. - - We need to rework all of vi to have three return values: - - 0: success - 1: vi error, continue - 2: fatal error, die - - Right now we don't recognize fatal errors for what they are. - -VI: Change the screen scrolling to not eat user characters... i.e. - g/pattern/foo should not eat already entered chars. - -COMMON: It's known that it's possible to sync the backing files in the - wrong manner, leaving backup files that aren't recoverable. This - is going to be left alone until we have a logging version of DB, - which will hopefully fix this (or at least make it possible to - easily do so). - -COMMON: The complete list of POSIX.1 calls that can return EINTR are: - - wait, waitpid, sleep, dup2, close, read, write, - fcntl(SETLCKW) tcsetattr, tcdrain - - The problem is that technically, any system/library call can - return EINTR, so, while nvi blocks (most of?) the obvious ones, - someone may have to do a complete pass and block signals - everywhere. - -COMMON: The vi main command loop should use the general-purpose overflow - and underflow routines. In addition, the vi command loop uses - unsigned longs -- should probably be fixed as a 32-bit unsigned - type, and then check to make sure it's never used as as variable - type again. - -DB: When nvi edits files that don't have trailing newlines, it appends - one, regardless. This is required, by default, from POSIX.2. - -COMMON: Open mode is not yet implemented. - -COMMON: ^C isn't passed to the shell in the script windows as an interrupt - character. - -COMMON: The options: - - hardtabs, lisp, optimize, redraw, slowopen - - are recognized, but not implemented. These options are unlikely - to be implemented, so if you want them you might want to say - something! I will implement lisp if anyone ever documents how it - worked. - -COMMON: If you run out of space in the recovery directory, the recovery - file is left in place. - -COMMON: Should "view" set a lock on the file? - -COMMON: Field editing shouldn't be hard to add to nvi: - - Field editing file template: - - version # - field # row/column start row/column stop - label field # Label string - re field # Matching re string. - field # row/column start row/column stop - label field # Label string - re field # Matching re string. - - <tab> moves to the next field - <bs> in column 0 moves to the previous field - -COMMON: Let's rethink using an IPC mechanism: - - Two way channel, with events passing in both directions. - - Load into the same address space (else, how do file permissions) forks - in v_init -- screens get events from vi, vi gets events queued up from - screens. - - Vi: - E_CHARACTER, /* Input character: e_c set. */ - E_EOF, /* End of input (NOT ^D). */ - E_ERR, /* Input error. */ - E_INTERRUPT, /* Interrupt. */ - E_REPAINT, /* Repaint: e_flno, e_tlno set. */ - E_RESIZE, /* SIGWINCH: e_lno, e_cno set. */ - E_SIGCONT, /* SIGCONT arrived. */ - E_SIGFATAL, /* fatal signal arrived. - E_START, /* Start ex/vi. */ - E_STOP, /* Stop ex/vi. */ - E_STRING, /* Input string: e_csp, e_len set. */ - - Screen: - E_ADDSTR /* Add a string to the screen. */ - E_ATTRIBUTE /* Screen attribute. */ - E_BELL /* Beep/bell/flash the terminal. */ - E_BUSY /* Display a busy message. */ - E_CANONICAL /* Enter tty canonical mode. */ - E_CLRTOEOL /* Clear to the end of the line. */ - E_CURSOR /* Return the cursor location. */ - E_DELETELN /* Delete a line. */ - E_DISCARD /* Discard a screen. */ - E_EXADJUST /* Ex: screen adjustment routine. */ - E_FMAP /* Set a function key. */ - E_GETKEY /* Get a key event. */ - E_INSERTLN /* Insert a line. */ - E_MOVE /* Move the cursor. */ - E_MESSAGE /* Message or ex output. */ - E_REFRESH /* Refresh the screen. */ - E_RESIZE /* Resize two screens. */ - E_SPLIT /* Split the screen. */ - E_SUSPEND /* Suspend the editor. */ - -EX: It would be nice to inverse video the replaced text during - interactive substitute. - -EX: The :args command should put the current file name out in reverse - video. This isn't going to be easy, currently only full lines can - be in reverse video, not just parts. - -TK: We currently permit the user to change the lines, columns and term - edit options. Shouldn't that be illegal in tknvi? - -VI: The strings found by searches should be highlighted until the next - character is entered. - -VI: Display a split vi screen for the :help command. - -VI: When getting a key for a continue screen, we should always read from - the terminal, not from a mapped key. - -VI: The sentence, paragraph and section movement commands don't match - historic practice in some boundary cases. This should be left - alone until POSIX 1003.2 makes up its mind. - -VI: The vs_sm_fill routine should scroll if possible, not always redraw. - -VI: Think about setting a dirty/inuse bits on the lines of the SMAP - structure. That way the message routines could steal lines and - refresh would continue to work, because it would know not to touch - the lines that were in use. |