Warn when commit message is suspiciously long

[savchenko]

Is your feature request related to a problem? Please describe.
Users might write extra-long commit messages which frustrate variety of workflows.
Consider someone pushing the following:

Describe the solution you'd like

• Limit 1st line to 50 symbols
• Keep 2nd line empty
• Wrap the rest at 72 characters

Describe alternatives you've considered
Format each commit manually.

Additional context
N/A

[extrawurst]

problem with this is that it is not well defined what limits are correct and I am shying away of requiring the user to fiddle in more config files.

the most common way to assure stuff like this is having (pre)commit-hooks

[extrawurst]

to reiterate my feedback from the #508:

I am not a fan of this requiring new configuration, abusing the style config I not an option.

my suggestion for an MVP is:

• we hardcode the first-line-limit to 50
• we show a red message (first line exceeds x chars) on the bottom (of the dialog, left of the count) if the limit is exceeded

[extrawurst]

looks like this now:

[savchenko]

I wonder how the 2nd line has appeared. Have you merged/implemented shift+enter somewhere in-between? :)

[extrawurst]

I wonder how the 2nd line has appeared. Have you merged/implemented shift+enter somewhere in-between? :)

that's what the external editor support is currently used for:

edit: that is until #509 is merged

[savchenko]

edit: that is until #509 is merged

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